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From akuznet...@apache.org
Subject [15/66] [abbrv] ignite git commit: IGNITE-950 - Renaming.
Date Thu, 05 Nov 2015 03:28:07 GMT
http://git-wip-us.apache.org/repos/asf/ignite/blob/20f5b9cd/modules/core/src/main/java/org/apache/ignite/internal/portable/BinaryReaderExImpl.java
----------------------------------------------------------------------
diff --git a/modules/core/src/main/java/org/apache/ignite/internal/portable/BinaryReaderExImpl.java b/modules/core/src/main/java/org/apache/ignite/internal/portable/BinaryReaderExImpl.java
new file mode 100644
index 0000000..2c3fd91
--- /dev/null
+++ b/modules/core/src/main/java/org/apache/ignite/internal/portable/BinaryReaderExImpl.java
@@ -0,0 +1,2765 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.ignite.internal.portable;
+
+import java.io.ByteArrayInputStream;
+import java.io.EOFException;
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.lang.reflect.Array;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.math.BigDecimal;
+import java.math.BigInteger;
+import java.sql.Timestamp;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Date;
+import java.util.LinkedHashMap;
+import java.util.LinkedList;
+import java.util.Map;
+import java.util.Properties;
+import java.util.TreeMap;
+import java.util.TreeSet;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentSkipListSet;
+import org.apache.ignite.IgniteCheckedException;
+import org.apache.ignite.binary.BinaryObject;
+import org.apache.ignite.binary.BinaryObjectException;
+import org.apache.ignite.binary.BinaryTypeIdMapper;
+import org.apache.ignite.binary.BinaryInvalidTypeException;
+import org.apache.ignite.binary.BinaryRawReader;
+import org.apache.ignite.binary.BinaryReader;
+import org.apache.ignite.internal.portable.streams.PortableHeapInputStream;
+import org.apache.ignite.internal.portable.streams.PortableInputStream;
+import org.apache.ignite.internal.util.GridEnumCache;
+import org.apache.ignite.internal.util.lang.GridMapEntry;
+import org.apache.ignite.internal.util.typedef.internal.SB;
+import org.apache.ignite.internal.util.typedef.internal.U;
+import org.apache.ignite.lang.IgniteBiTuple;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.ARR_LIST;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.BOOLEAN;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.BOOLEAN_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.BYTE;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.BYTE_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.CHAR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.CHAR_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.CLASS;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.COL;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.CONC_HASH_MAP;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.CONC_SKIP_LIST_SET;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.DATE;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.DATE_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.DECIMAL;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.DECIMAL_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.DFLT_HDR_LEN;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.DOUBLE;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.DOUBLE_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.ENUM;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.ENUM_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.FLOAT;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.FLOAT_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.HANDLE;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.HASH_MAP;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.HASH_SET;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.INT;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.INT_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.LINKED_HASH_MAP;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.LINKED_HASH_SET;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.LINKED_LIST;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.LONG;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.LONG_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.MAP;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.MAP_ENTRY;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.NULL;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.OBJ;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.OBJECT_TYPE_ID;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.OBJ_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.OPTM_MARSH;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.PORTABLE_OBJ;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.PROPERTIES_MAP;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.SHORT;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.SHORT_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.STRING;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.STRING_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.TIMESTAMP;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.TIMESTAMP_ARR;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.TREE_MAP;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.TREE_SET;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.UNREGISTERED_TYPE_ID;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.USER_COL;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.USER_SET;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.UUID;
+import static org.apache.ignite.internal.portable.GridPortableMarshaller.UUID_ARR;
+
+/**
+ * Portable reader implementation.
+ */
+@SuppressWarnings("unchecked")
+public class BinaryReaderExImpl implements BinaryReader, BinaryRawReaderEx, ObjectInput {
+    /** Length of a single field descriptor. */
+    private static final int FIELD_DESC_LEN = 16;
+
+    /** */
+    private final PortableContext ctx;
+
+    /** */
+    private final PortableInputStream in;
+
+    /** */
+    private final int start;
+
+    /** */
+    private final PortableReaderContext rCtx;
+
+    /** */
+    private final ClassLoader ldr;
+
+    /** */
+    private PortableClassDescriptor desc;
+
+    /** Flag indicating that object header was parsed. */
+    private boolean hdrParsed;
+
+    /** Type ID. */
+    private int typeId;
+
+    /** Raw offset. */
+    private int rawOff;
+
+    /** */
+    private int hdrLen;
+
+    /** Footer start. */
+    private int footerStart;
+
+    /** Footer end. */
+    private int footerLen;
+
+    /** ID mapper. */
+    private BinaryTypeIdMapper idMapper;
+
+    /** Schema Id. */
+    private int schemaId;
+
+    /** Object schema. */
+    private PortableSchema schema;
+
+    /**
+     * @param ctx Context.
+     * @param arr Array.
+     * @param start Start.
+     * @param ldr Class loader.
+     */
+    public BinaryReaderExImpl(PortableContext ctx, byte[] arr, int start, ClassLoader ldr) {
+        this(ctx, new PortableHeapInputStream(arr), start, ldr, new PortableReaderContext());
+    }
+
+    /**
+     * @param ctx Context.
+     * @param in Input stream.
+     * @param start Start.
+     */
+    BinaryReaderExImpl(PortableContext ctx, PortableInputStream in, int start, ClassLoader ldr) {
+        this(ctx, in, start, ldr, new PortableReaderContext());
+    }
+
+    /**
+     * @param ctx Context.
+     * @param in Input stream.
+     * @param start Start.
+     * @param rCtx Context.
+     */
+    BinaryReaderExImpl(PortableContext ctx, PortableInputStream in, int start, ClassLoader ldr,
+        PortableReaderContext rCtx) {
+        this.ctx = ctx;
+        this.in = in;
+        this.start = start;
+        this.ldr = ldr;
+        this.rCtx = rCtx;
+
+        in.position(start);
+    }
+
+    /**
+     * Preloads typeId from the input array.
+     */
+    private void parseHeaderIfNeeded() {
+        if (hdrParsed)
+            return;
+
+        int retPos = in.position();
+
+        in.position(start);
+
+        byte hdr = in.readByte();
+
+        if (hdr != GridPortableMarshaller.OBJ)
+            throw new BinaryObjectException("Invalid header [pos=" + retPos + "expected=" + GridPortableMarshaller.OBJ +
+                ", actual=" + hdr + ']');
+
+        PortableUtils.checkProtocolVersion(in.readByte());
+
+        in.position(in.position() + 2); // Skip flags.
+
+        typeId = in.readIntPositioned(start + GridPortableMarshaller.TYPE_ID_POS);
+
+        IgniteBiTuple<Integer, Integer> footer = PortableUtils.footerAbsolute(in, start);
+
+        footerStart = footer.get1();
+        footerLen = footer.get2() - footerStart;
+
+        schemaId = in.readIntPositioned(start + GridPortableMarshaller.SCHEMA_ID_POS);
+
+        rawOff = PortableUtils.rawOffsetAbsolute(in, start);
+
+        if (typeId == UNREGISTERED_TYPE_ID) {
+            // Skip to the class name position.
+            in.position(start + GridPortableMarshaller.DFLT_HDR_LEN);
+
+            int off = in.position();
+
+            Class cls = doReadClass(typeId);
+
+            // registers class by typeId, at least locally if the cache is not ready yet.
+            PortableClassDescriptor desc = ctx.descriptorForClass(cls);
+
+            typeId = desc.typeId();
+
+            int clsNameLen = in.position() - off;
+
+            hdrLen = DFLT_HDR_LEN + clsNameLen;
+        }
+        else
+            hdrLen = DFLT_HDR_LEN;
+
+        // Restore state.
+        in.position(retPos);
+
+        hdrParsed = true;
+    }
+
+    /**
+     * @return Descriptor.
+     */
+    PortableClassDescriptor descriptor() {
+        return desc;
+    }
+
+    /**
+     * @return Unmarshalled value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Object unmarshal() throws BinaryObjectException {
+        return unmarshal(false);
+    }
+
+    /**
+     * @param offset Offset in the array.
+     * @return Unmarshalled value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    public Object unmarshal(int offset) throws BinaryObjectException {
+        in.position(offset);
+
+        return in.position() >= 0 ? unmarshal() : null;
+    }
+
+    /**
+     * @param fieldName Field name.
+     * @return Unmarshalled value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Object unmarshalField(String fieldName) throws BinaryObjectException {
+        return hasField(fieldName) ? unmarshal() : null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Unmarshalled value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Object unmarshalField(int fieldId) throws BinaryObjectException {
+        parseHeaderIfNeeded();
+
+        return hasField(fieldId) ? unmarshal() : null;
+    }
+
+    /**
+     * @param fieldOffset Field offset.
+     * @return Unmarshalled value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Object unmarshalFieldByOffset(int fieldOffset) throws BinaryObjectException {
+        assert fieldOffset != 0;
+
+        parseHeaderIfNeeded();
+
+        in.position(start + in.readIntPositioned(footerStart + fieldOffset));
+
+        return unmarshal();
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Byte readByte(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(BYTE) == Flag.NULL)
+                return null;
+
+            return in.readByte();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Short readShort(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(SHORT) == Flag.NULL)
+                return null;
+
+            return in.readShort();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Integer readInt(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(INT) == Flag.NULL)
+                return null;
+
+            return in.readInt();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Long readLong(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(LONG) == Flag.NULL)
+                return null;
+
+            return in.readLong();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Float readFloat(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(FLOAT) == Flag.NULL)
+                return null;
+
+            return in.readFloat();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Double readDouble(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(DOUBLE) == Flag.NULL)
+                return null;
+
+            return in.readDouble();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Character readChar(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(CHAR) == Flag.NULL)
+                return null;
+
+            return in.readChar();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Boolean readBoolean(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(BOOLEAN) == Flag.NULL)
+                return null;
+
+            return in.readBoolean();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable BigDecimal readDecimal(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(DECIMAL) == Flag.NULL)
+                return null;
+
+            return doReadDecimal();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable String readString(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(STRING) == Flag.NULL)
+                return null;
+
+            return doReadString();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable UUID readUuid(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(UUID) == Flag.NULL)
+                return null;
+
+            return doReadUuid();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Date readDate(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(DATE) == Flag.NULL)
+                return null;
+
+            return doReadDate();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Timestamp readTimestamp(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(TIMESTAMP) == Flag.NULL)
+                return null;
+
+            return doReadTimestamp();
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Object readObject(int fieldId) throws BinaryObjectException {
+        return hasField(fieldId) ? doReadObject() : null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable byte[] readByteArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(BYTE_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadByteArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable short[] readShortArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(SHORT_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadShortArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable int[] readIntArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(INT_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadIntArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable long[] readLongArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(LONG_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadLongArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable float[] readFloatArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(FLOAT_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadFloatArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable double[] readDoubleArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(DOUBLE_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadDoubleArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable char[] readCharArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(CHAR_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadCharArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable boolean[] readBooleanArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(BOOLEAN_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadBooleanArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable BigDecimal[] readDecimalArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(DECIMAL_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadDecimalArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable String[] readStringArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(STRING_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadStringArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable UUID[] readUuidArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(UUID_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadUuidArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Date[] readDateArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(DATE_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadDateArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Timestamp[] readTimestampArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(TIMESTAMP_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadTimestampArray();
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Object[] readObjectArray(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(OBJ_ARR);
+
+            if (flag == Flag.NORMAL)
+                return doReadObjectArray(true);
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @param cls Collection class.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable <T> Collection<T> readCollection(int fieldId, @Nullable Class<? extends Collection> cls)
+        throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(COL);
+
+            if (flag == Flag.NORMAL)
+                return (Collection<T>)doReadCollection(true, cls);
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @param cls Map class.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Map<?, ?> readMap(int fieldId, @Nullable Class<? extends Map> cls)
+        throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(MAP);
+
+            if (flag == Flag.NORMAL)
+                return doReadMap(true, cls);
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException On case of error.
+     */
+    @Nullable Map.Entry<?, ?> readMapEntry(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(MAP_ENTRY);
+
+            if (flag == Flag.NORMAL)
+                return doReadMapEntry(true);
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Portable object.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable BinaryObject readPortableObject(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(PORTABLE_OBJ) == Flag.NULL)
+                return null;
+
+            return new BinaryObjectImpl(ctx, doReadByteArray(), in.readInt());
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @param cls Class.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Enum<?> readEnum(int fieldId, @Nullable Class<?> cls) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(ENUM) == Flag.NULL)
+                return null;
+
+            // Revisit: why have we started writing Class for enums in their serialized form?
+            if (cls == null)
+                cls = doReadClass();
+            else
+                doReadClass();
+
+            Object[] vals = GridEnumCache.get(cls);
+
+            return (Enum<?>)vals[in.readInt()];
+        }
+        else
+            return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @param cls Class.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Object[] readEnumArray(int fieldId, @Nullable Class<?> cls) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            Flag flag = checkFlag(ENUM_ARR);
+
+            if (flag == Flag.NORMAL) {
+                if (cls == null)
+                    cls = doReadClass();
+                else
+                    doReadClass();
+
+                return doReadEnumArray(cls);
+            }
+            else if (flag == Flag.HANDLE)
+                return readHandleField();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return Field class.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable Class<?> readClass(int fieldId) throws BinaryObjectException {
+        if (hasField(fieldId)) {
+            if (checkFlag(CLASS) == Flag.NULL)
+                return null;
+
+            return doReadClass();
+        }
+
+        return null;
+    }
+
+    /**
+     * @param obj Object.
+     */
+    void setHandler(Object obj) {
+        rCtx.setObjectHandler(start, obj);
+    }
+
+    /**
+     * @param obj Object.
+     * @param pos Position.
+     */
+    void setHandler(Object obj, int pos) {
+        rCtx.setObjectHandler(pos, obj);
+    }
+
+    /**
+     * Recreating field value from a handle.
+     *
+     * @param <T> Field type.
+     * @return Field.
+     */
+    private <T> T readHandleField() {
+        int handle = (in.position() - 1) - in.readInt();
+
+        Object obj = rCtx.getObjectByHandle(handle);
+
+        if (obj == null) {
+            in.position(handle);
+
+            obj = doReadObject();
+        }
+
+        return (T)obj;
+    }
+    /** {@inheritDoc} */
+    @Override public byte readByte(String fieldName) throws BinaryObjectException {
+        Byte val = readByte(fieldId(fieldName));
+
+        return val != null ? val : 0;
+    }
+
+    /** {@inheritDoc} */
+    @Override public byte readByte() throws BinaryObjectException {
+        return in.readByte();
+    }
+
+    /** {@inheritDoc} */
+    @Override public short readShort(String fieldName) throws BinaryObjectException {
+        Short val = readShort(fieldId(fieldName));
+
+        return val != null ? val : 0;
+    }
+
+    /** {@inheritDoc} */
+    @Override public short readShort() throws BinaryObjectException {
+        return in.readShort();
+    }
+
+    /** {@inheritDoc} */
+    @Override public int readInt(String fieldName) throws BinaryObjectException {
+        Integer val = readInt(fieldId(fieldName));
+
+        return val != null ? val : 0;
+    }
+
+    /** {@inheritDoc} */
+    @Override public int readInt() throws BinaryObjectException {
+        return in.readInt();
+    }
+
+    /** {@inheritDoc} */
+    @Override public long readLong(String fieldName) throws BinaryObjectException {
+        Long val = readLong(fieldId(fieldName));
+
+        return val != null ? val : 0;
+    }
+
+    /** {@inheritDoc} */
+    @Override public long readLong() throws BinaryObjectException {
+        return in.readLong();
+    }
+
+    /** {@inheritDoc} */
+    @Override public float readFloat(String fieldName) throws BinaryObjectException {
+        Float val = readFloat(fieldId(fieldName));
+
+        return val != null ? val : 0;
+    }
+
+    /** {@inheritDoc} */
+    @Override public float readFloat() throws BinaryObjectException {
+        return in.readFloat();
+    }
+
+    /** {@inheritDoc} */
+    @Override public double readDouble(String fieldName) throws BinaryObjectException {
+        Double val = readDouble(fieldId(fieldName));
+
+        return val != null ? val : 0;
+    }
+
+    /** {@inheritDoc} */
+    @Override public double readDouble() throws BinaryObjectException {
+        return in.readDouble();
+    }
+
+    /** {@inheritDoc} */
+    @Override public char readChar(String fieldName) throws BinaryObjectException {
+        Character val = readChar(fieldId(fieldName));
+
+        return val != null ? val : 0;
+    }
+
+    /** {@inheritDoc} */
+    @Override public char readChar() throws BinaryObjectException {
+        return in.readChar();
+    }
+
+    /** {@inheritDoc} */
+    @Override public boolean readBoolean(String fieldName) throws BinaryObjectException {
+        Boolean val = readBoolean(fieldId(fieldName));
+
+        return val != null ? val : false;
+    }
+
+    /** {@inheritDoc} */
+    @Override public boolean readBoolean() throws BinaryObjectException {
+        return in.readBoolean();
+    }
+
+    /** {@inheritDoc} */
+    @Override @Nullable public BigDecimal readDecimal(String fieldName) throws BinaryObjectException {
+        return readDecimal(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Override @Nullable public BigDecimal readDecimal() throws BinaryObjectException {
+        if (checkFlag(DECIMAL) == Flag.NULL)
+            return null;
+
+        return doReadDecimal();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public String readString(String fieldName) throws BinaryObjectException {
+        return readString(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public String readString() throws BinaryObjectException {
+        if (checkFlag(STRING) == Flag.NULL)
+            return null;
+
+        return doReadString();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public UUID readUuid(String fieldName) throws BinaryObjectException {
+        return readUuid(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public UUID readUuid() throws BinaryObjectException {
+        if (checkFlag(UUID) == Flag.NULL)
+            return null;
+
+        return doReadUuid();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public Date readDate(String fieldName) throws BinaryObjectException {
+        return readDate(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public Date readDate() throws BinaryObjectException {
+        if (checkFlag(DATE) == Flag.NULL)
+            return null;
+
+        return doReadDate();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public Timestamp readTimestamp(String fieldName) throws BinaryObjectException {
+        return readTimestamp(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public Timestamp readTimestamp() throws BinaryObjectException {
+        if (checkFlag(TIMESTAMP) == Flag.NULL)
+            return null;
+
+        return doReadTimestamp();
+    }
+
+    /** {@inheritDoc} */
+    @SuppressWarnings("unchecked")
+    @Nullable @Override public <T> T readObject(String fieldName) throws BinaryObjectException {
+        return (T)readObject(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Override public Object readObject() throws BinaryObjectException {
+        return doReadObject();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public Object readObjectDetached() throws BinaryObjectException {
+        return unmarshal(true);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public byte[] readByteArray(String fieldName) throws BinaryObjectException {
+        return readByteArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public byte[] readByteArray() throws BinaryObjectException {
+        if (checkFlag(BYTE_ARR) == Flag.NULL)
+            return null;
+
+        return doReadByteArray();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public short[] readShortArray(String fieldName) throws BinaryObjectException {
+        return readShortArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public short[] readShortArray() throws BinaryObjectException {
+        if (checkFlag(SHORT_ARR) == Flag.NULL)
+            return null;
+
+        return doReadShortArray();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public int[] readIntArray(String fieldName) throws BinaryObjectException {
+        return readIntArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public int[] readIntArray() throws BinaryObjectException {
+        if (checkFlag(INT_ARR) == Flag.NULL)
+            return null;
+
+        return doReadIntArray();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public long[] readLongArray(String fieldName) throws BinaryObjectException {
+        return readLongArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public long[] readLongArray() throws BinaryObjectException {
+        if (checkFlag(LONG_ARR) == Flag.NULL)
+            return null;
+
+        return doReadLongArray();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public float[] readFloatArray(String fieldName) throws BinaryObjectException {
+        return readFloatArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public float[] readFloatArray() throws BinaryObjectException {
+        if (checkFlag(FLOAT_ARR) == Flag.NULL)
+            return null;
+
+        return doReadFloatArray();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public double[] readDoubleArray(String fieldName) throws BinaryObjectException {
+        return readDoubleArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public double[] readDoubleArray() throws BinaryObjectException {
+        if (checkFlag(DOUBLE_ARR) == Flag.NULL)
+            return null;
+
+        return doReadDoubleArray();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public char[] readCharArray(String fieldName) throws BinaryObjectException {
+        return readCharArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public char[] readCharArray() throws BinaryObjectException {
+        if (checkFlag(CHAR_ARR) == Flag.NULL)
+            return null;
+
+        return doReadCharArray();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public boolean[] readBooleanArray(String fieldName) throws BinaryObjectException {
+        return readBooleanArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public boolean[] readBooleanArray() throws BinaryObjectException {
+        if (checkFlag(BOOLEAN_ARR) == Flag.NULL)
+            return null;
+
+        return doReadBooleanArray();
+    }
+
+    /** {@inheritDoc} */
+    @Override @Nullable public BigDecimal[] readDecimalArray(String fieldName) throws BinaryObjectException {
+        return readDecimalArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Override @Nullable public BigDecimal[] readDecimalArray() throws BinaryObjectException {
+        if (checkFlag(DECIMAL_ARR) == Flag.NULL)
+            return null;
+
+        return doReadDecimalArray();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public String[] readStringArray(String fieldName) throws BinaryObjectException {
+        return readStringArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public String[] readStringArray() throws BinaryObjectException {
+        if (checkFlag(STRING_ARR) == Flag.NULL)
+            return null;
+
+        return doReadStringArray();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public UUID[] readUuidArray(String fieldName) throws BinaryObjectException {
+        return readUuidArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public UUID[] readUuidArray() throws BinaryObjectException {
+        if (checkFlag(UUID_ARR) == Flag.NULL)
+            return null;
+
+        return doReadUuidArray();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public Date[] readDateArray(String fieldName) throws BinaryObjectException {
+        return readDateArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public Timestamp[] readTimestampArray(String fieldName) throws BinaryObjectException {
+        return readTimestampArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public Date[] readDateArray() throws BinaryObjectException {
+        if (checkFlag(DATE_ARR) == Flag.NULL)
+            return null;
+
+        return doReadDateArray();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public Timestamp[] readTimestampArray() throws BinaryObjectException {
+        if (checkFlag(TIMESTAMP_ARR) == Flag.NULL)
+            return null;
+
+        return doReadTimestampArray();
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public Object[] readObjectArray(String fieldName) throws BinaryObjectException {
+        return readObjectArray(fieldId(fieldName));
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public Object[] readObjectArray() throws BinaryObjectException {
+        if (checkFlag(OBJ_ARR) == Flag.NULL)
+            return null;
+
+        return doReadObjectArray(true);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public <T> Collection<T> readCollection(String fieldName) throws BinaryObjectException {
+        return readCollection(fieldId(fieldName), null);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public <T> Collection<T> readCollection() throws BinaryObjectException {
+        if (checkFlag(COL) == Flag.NULL)
+            return null;
+
+        return (Collection<T>)doReadCollection(true, null);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public <T> Collection<T> readCollection(String fieldName,
+        Class<? extends Collection<T>> colCls) throws BinaryObjectException {
+        return readCollection(fieldId(fieldName), colCls);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public <T> Collection<T> readCollection(Class<? extends Collection<T>> colCls)
+        throws BinaryObjectException {
+        if (checkFlag(COL) == Flag.NULL)
+            return null;
+
+        return (Collection<T>)doReadCollection(true, colCls);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public <K, V> Map<K, V> readMap(String fieldName) throws BinaryObjectException {
+        return (Map<K, V>)readMap(fieldId(fieldName), null);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public <K, V> Map<K, V> readMap() throws BinaryObjectException {
+        if (checkFlag(MAP) == Flag.NULL)
+            return null;
+
+        return (Map<K, V>)doReadMap(true, null);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public <K, V> Map<K, V> readMap(String fieldName, Class<? extends Map<K, V>> mapCls)
+        throws BinaryObjectException {
+        return (Map<K, V>)readMap(fieldId(fieldName), mapCls);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public <K, V> Map<K, V> readMap(Class<? extends Map<K, V>> mapCls)
+        throws BinaryObjectException {
+        if (checkFlag(MAP) == Flag.NULL)
+            return null;
+
+        return (Map<K, V>)doReadMap(true, mapCls);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public <T extends Enum<?>> T readEnum(String fieldName)
+        throws BinaryObjectException {
+        return (T)readEnum(fieldId(fieldName), null);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public <T extends Enum<?>> T readEnum() throws BinaryObjectException {
+        if (checkFlag(ENUM) == Flag.NULL)
+            return null;
+
+        Class cls = doReadClass();
+
+        return (T)doReadEnum(cls);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public <T extends Enum<?>> T[] readEnumArray(String fieldName)
+        throws BinaryObjectException {
+        return (T[])readEnumArray(fieldId(fieldName), null);
+    }
+
+    /** {@inheritDoc} */
+    @Nullable @Override public <T extends Enum<?>> T[] readEnumArray() throws BinaryObjectException {
+        if (checkFlag(ENUM_ARR) == Flag.NULL)
+            return null;
+
+        Class cls = doReadClass();
+
+        return (T[])doReadEnumArray(cls);
+    }
+
+    /**
+     * Ensure that type flag is either null or contains expected value.
+     *
+     * @param expFlag Expected value.
+     * @return Flag.
+     * @throws org.apache.ignite.binary.BinaryObjectException If flag is neither null, nor expected.
+     */
+    private Flag checkFlag(byte expFlag) {
+        byte flag = in.readByte();
+
+        if (flag == NULL)
+            return Flag.NULL;
+        else if (flag == HANDLE)
+            return Flag.HANDLE;
+        else if (flag != expFlag) {
+            int pos = in.position() - 1;
+
+            throw new BinaryObjectException("Unexpected flag value [pos=" + pos + ", expected=" + expFlag +
+                ", actual=" + flag + ']');
+        }
+
+        return Flag.NORMAL;
+    }
+
+    /**
+     * @param fieldName Field name.
+     * @return {@code True} if field is set.
+     */
+    public boolean hasField(String fieldName) {
+        return hasField(fieldId(fieldName));
+    }
+
+    /**
+     * @param fieldId Field ID.
+     * @return {@code True} if field is set.
+     */
+    private boolean hasField(int fieldId) {
+        return fieldOffset(fieldId) != 0;
+    }
+
+    /** {@inheritDoc} */
+    @Override public BinaryRawReader rawReader() {
+        in.position(rawOff);
+
+        return this;
+    }
+
+    /**
+     * @return Unmarshalled value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable private Object unmarshal(boolean detach) throws BinaryObjectException {
+        int start = in.position();
+
+        byte flag = in.readByte();
+
+        switch (flag) {
+            case NULL:
+                return null;
+
+            case HANDLE:
+                int handle = start - in.readInt();
+
+                BinaryObject handledPo = rCtx.getPortableByHandle(handle);
+
+                if (handledPo != null)
+                    return handledPo;
+
+                in.position(handle);
+
+                return unmarshal();
+
+            case OBJ:
+                PortableUtils.checkProtocolVersion(in.readByte());
+
+                BinaryObjectEx po;
+
+                if (detach) {
+                    in.position(start + GridPortableMarshaller.TOTAL_LEN_POS);
+
+                    int len = in.readInt();
+
+                    in.position(start);
+
+                    po = new BinaryObjectImpl(ctx, in.readByteArray(len), 0);
+                }
+                else
+                    po = in.offheapPointer() > 0
+                        ? new BinaryObjectOffheapImpl(ctx, in.offheapPointer(), start,
+                        in.remaining() + in.position())
+                        : new BinaryObjectImpl(ctx, in.array(), start);
+
+                rCtx.setPortableHandler(start, po);
+
+                in.position(start + po.length());
+
+                return po;
+
+            case BYTE:
+                return in.readByte();
+
+            case SHORT:
+                return in.readShort();
+
+            case INT:
+                return in.readInt();
+
+            case LONG:
+                return in.readLong();
+
+            case FLOAT:
+                return in.readFloat();
+
+            case DOUBLE:
+                return in.readDouble();
+
+            case CHAR:
+                return in.readChar();
+
+            case BOOLEAN:
+                return in.readBoolean();
+
+            case DECIMAL:
+                return doReadDecimal();
+
+            case STRING:
+                return doReadString();
+
+            case UUID:
+                return doReadUuid();
+
+            case DATE:
+                return doReadDate();
+
+            case TIMESTAMP:
+                return doReadTimestamp();
+
+            case BYTE_ARR:
+                return doReadByteArray();
+
+            case SHORT_ARR:
+                return doReadShortArray();
+
+            case INT_ARR:
+                return doReadIntArray();
+
+            case LONG_ARR:
+                return doReadLongArray();
+
+            case FLOAT_ARR:
+                return doReadFloatArray();
+
+            case DOUBLE_ARR:
+                return doReadDoubleArray();
+
+            case CHAR_ARR:
+                return doReadCharArray();
+
+            case BOOLEAN_ARR:
+                return doReadBooleanArray();
+
+            case DECIMAL_ARR:
+                return doReadDecimalArray();
+
+            case STRING_ARR:
+                return doReadStringArray();
+
+            case UUID_ARR:
+                return doReadUuidArray();
+
+            case DATE_ARR:
+                return doReadDateArray();
+
+            case TIMESTAMP_ARR:
+                return doReadTimestampArray();
+
+            case OBJ_ARR:
+                return doReadObjectArray(false);
+
+            case COL:
+                return doReadCollection(false, null);
+
+            case MAP:
+                return doReadMap(false, null);
+
+            case MAP_ENTRY:
+                return doReadMapEntry(false);
+
+            case PORTABLE_OBJ:
+                return doReadPortableObject();
+
+            case ENUM:
+                return doReadEnum(doReadClass());
+
+            case ENUM_ARR:
+                return doReadEnumArray(doReadClass());
+
+            case CLASS:
+                return in.readInt();
+
+            case OPTM_MARSH:
+                int len = in.readInt();
+
+                ByteArrayInputStream input = new ByteArrayInputStream(in.array(), in.position(), len);
+
+                Object obj;
+
+                try {
+                    obj = ctx.optimizedMarsh().unmarshal(input, null);
+                }
+                catch (IgniteCheckedException e) {
+                    throw new BinaryObjectException("Failed to unmarshal object with optmMarsh marshaller", e);
+                }
+
+                return obj;
+
+            default:
+                throw new BinaryObjectException("Invalid flag value: " + flag);
+        }
+    }
+
+    /**
+     * @return Value.
+     */
+    private BigDecimal doReadDecimal() {
+        int scale = in.readInt();
+        byte[] mag = doReadByteArray();
+
+        BigInteger intVal = new BigInteger(mag);
+
+        if (scale < 0) {
+            scale &= 0x7FFFFFFF;
+
+            intVal = intVal.negate();
+        }
+
+        return new BigDecimal(intVal, scale);
+    }
+
+    /**
+     * @return Value.
+     */
+    private String doReadString() {
+        if (in.readBoolean()) {
+            if (!in.hasArray())
+                return new String(doReadByteArray(), UTF_8);
+
+            int strLen = in.readInt();
+            int strOff = in.position();
+
+            String res = new String(in.array(), strOff, strLen, UTF_8);
+
+            in.position(in.position() + strLen);
+
+            return res;
+        }
+        else
+            return String.valueOf(doReadCharArray());
+    }
+
+    /**
+     * @return Value.
+     */
+    private UUID doReadUuid() {
+        return new UUID(in.readLong(), in.readLong());
+    }
+
+    /**
+     * @return Value.
+     */
+    private Date doReadDate() {
+        long time = in.readLong();
+
+        return new Date(time);
+    }
+
+    /**
+     * @return Value.
+     */
+    private Timestamp doReadTimestamp() {
+        long time = in.readLong();
+        int nanos = in.readInt();
+
+        Timestamp ts = new Timestamp(time);
+
+        ts.setNanos(ts.getNanos() + nanos);
+
+        return ts;
+    }
+
+    /**
+     * @return Object.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @Nullable private Object doReadObject() throws BinaryObjectException {
+        BinaryReaderExImpl reader = new BinaryReaderExImpl(ctx, in, in.position(), ldr, rCtx);
+
+        return reader.deserialize();
+    }
+
+    /**
+     * @return Deserialized object.
+     * @throws org.apache.ignite.binary.BinaryObjectException If failed.
+     */
+    @Nullable Object deserialize() throws BinaryObjectException {
+        Object obj;
+
+        byte flag = in.readByte();
+
+        switch (flag) {
+            case NULL:
+                obj = null;
+
+                break;
+
+            case HANDLE:
+                int handle = start - in.readInt();
+
+                obj = rCtx.getObjectByHandle(handle);
+
+                if (obj == null) {
+                    int retPos = in.position();
+
+                    in.position(handle);
+
+                    obj = doReadObject();
+
+                    in.position(retPos);
+                }
+
+                break;
+
+            case OBJ:
+                parseHeaderIfNeeded();
+
+                assert typeId != UNREGISTERED_TYPE_ID;
+
+                PortableUtils.checkProtocolVersion(in.readByte());
+
+                boolean userType = PortableUtils.isUserType(this.readShort());
+
+                // Skip typeId and hash code.
+                in.position(in.position() + 8);
+
+                desc = ctx.descriptorForTypeId(userType, typeId, ldr);
+
+                int len = in.readInt();
+
+                in.position(start + hdrLen);
+
+                if (desc == null)
+                    throw new BinaryInvalidTypeException("Unknown type ID: " + typeId);
+
+                obj = desc.read(this);
+
+                in.position(start + len);
+
+                break;
+
+            case BYTE:
+                obj = in.readByte();
+
+                break;
+
+            case SHORT:
+                obj = in.readShort();
+
+                break;
+
+            case INT:
+                obj = in.readInt();
+
+                break;
+
+            case LONG:
+                obj = in.readLong();
+
+                break;
+
+            case FLOAT:
+                obj = in.readFloat();
+
+                break;
+
+            case DOUBLE:
+                obj = in.readDouble();
+
+                break;
+
+            case CHAR:
+                obj = in.readChar();
+
+                break;
+
+            case BOOLEAN:
+                obj = in.readBoolean();
+
+                break;
+
+            case DECIMAL:
+                obj = doReadDecimal();
+
+                break;
+
+            case STRING:
+                obj = doReadString();
+
+                break;
+
+            case UUID:
+                obj = doReadUuid();
+
+                break;
+
+            case DATE:
+                obj = doReadDate();
+
+                break;
+
+            case TIMESTAMP:
+                obj = doReadTimestamp();
+
+                break;
+
+            case BYTE_ARR:
+                obj = doReadByteArray();
+
+                break;
+
+            case SHORT_ARR:
+                obj = doReadShortArray();
+
+                break;
+
+            case INT_ARR:
+                obj = doReadIntArray();
+
+                break;
+
+            case LONG_ARR:
+                obj = doReadLongArray();
+
+                break;
+
+            case FLOAT_ARR:
+                obj = doReadFloatArray();
+
+                break;
+
+            case DOUBLE_ARR:
+                obj = doReadDoubleArray();
+
+                break;
+
+            case CHAR_ARR:
+                obj = doReadCharArray();
+
+                break;
+
+            case BOOLEAN_ARR:
+                obj = doReadBooleanArray();
+
+                break;
+
+            case DECIMAL_ARR:
+                obj = doReadDecimalArray();
+
+                break;
+
+            case STRING_ARR:
+                obj = doReadStringArray();
+
+                break;
+
+            case UUID_ARR:
+                obj = doReadUuidArray();
+
+                break;
+
+            case DATE_ARR:
+                obj = doReadDateArray();
+
+                break;
+
+            case TIMESTAMP_ARR:
+                obj = doReadTimestampArray();
+
+                break;
+
+            case OBJ_ARR:
+                obj = doReadObjectArray(true);
+
+                break;
+
+            case COL:
+                obj = doReadCollection(true, null);
+
+                break;
+
+            case MAP:
+                obj = doReadMap(true, null);
+
+                break;
+
+            case MAP_ENTRY:
+                obj = doReadMapEntry(true);
+
+                break;
+
+            case PORTABLE_OBJ:
+                obj = doReadPortableObject();
+
+                ((BinaryObjectImpl)obj).context(ctx);
+
+                if (!GridPortableMarshaller.KEEP_PORTABLES.get())
+                    obj = ((BinaryObject)obj).deserialize();
+
+                break;
+
+            case ENUM:
+                obj = doReadEnum(doReadClass());
+
+                break;
+
+            case ENUM_ARR:
+                obj = doReadEnumArray(doReadClass());
+
+                break;
+
+            case CLASS:
+                obj = doReadClass();
+
+                break;
+
+            case OPTM_MARSH:
+                int dataLen = in.readInt();
+
+                ByteArrayInputStream input = new ByteArrayInputStream(in.array(), in.position(), dataLen);
+
+                try {
+                    obj = ctx.optimizedMarsh().unmarshal(input, null);
+                }
+                catch (IgniteCheckedException e) {
+                    throw new BinaryObjectException("Failed to unmarshal object with optimized marshaller", e);
+                }
+
+                in.position(in.position() + dataLen);
+
+                break;
+
+            default:
+                throw new BinaryObjectException("Invalid flag value: " + flag);
+        }
+
+        return obj;
+    }
+
+    /**
+     * @return Value.
+     */
+    private byte[] doReadByteArray() {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        byte[] arr = in.readByteArray(len);
+
+        setHandler(arr, hPos);
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     */
+    private short[] doReadShortArray() {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        short[] arr = in.readShortArray(len);
+
+        setHandler(arr, hPos);
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     */
+    private int[] doReadIntArray() {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        int[] arr = in.readIntArray(len);
+
+        setHandler(arr, hPos);
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     */
+    private long[] doReadLongArray() {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        long[] arr = in.readLongArray(len);
+
+        setHandler(arr, hPos);
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     */
+    private float[] doReadFloatArray() {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        float[] arr = in.readFloatArray(len);
+
+        setHandler(arr, hPos);
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     */
+    private double[] doReadDoubleArray() {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        double[] arr = in.readDoubleArray(len);
+
+        setHandler(arr, hPos);
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     */
+    private char[] doReadCharArray() {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        char[] arr = in.readCharArray(len);
+
+        setHandler(arr, hPos);
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     */
+    private boolean[] doReadBooleanArray() {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        boolean[] arr = in.readBooleanArray(len);
+
+        setHandler(arr, hPos);
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    private BigDecimal[] doReadDecimalArray() throws BinaryObjectException {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        BigDecimal[] arr = new BigDecimal[len];
+
+        setHandler(arr, hPos);
+
+        for (int i = 0; i < len; i++) {
+            byte flag = in.readByte();
+
+            if (flag == NULL)
+                arr[i] = null;
+            else {
+                if (flag != DECIMAL)
+                    throw new BinaryObjectException("Invalid flag value: " + flag);
+
+                arr[i] = doReadDecimal();
+            }
+        }
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    private String[] doReadStringArray() throws BinaryObjectException {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        String[] arr = new String[len];
+
+        setHandler(arr, hPos);
+
+        for (int i = 0; i < len; i++) {
+            byte flag = in.readByte();
+
+            if (flag == NULL)
+                arr[i] = null;
+            else {
+                if (flag != STRING)
+                    throw new BinaryObjectException("Invalid flag value: " + flag);
+
+                arr[i] = doReadString();
+            }
+        }
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    private UUID[] doReadUuidArray() throws BinaryObjectException {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        UUID[] arr = new UUID[len];
+
+        setHandler(arr, hPos);
+
+        for (int i = 0; i < len; i++) {
+            byte flag = in.readByte();
+
+            if (flag == NULL)
+                arr[i] = null;
+            else {
+                if (flag != UUID)
+                    throw new BinaryObjectException("Invalid flag value: " + flag);
+
+                arr[i] = doReadUuid();
+            }
+        }
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    private Date[] doReadDateArray() throws BinaryObjectException {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        Date[] arr = new Date[len];
+
+        setHandler(arr, hPos);
+
+        for (int i = 0; i < len; i++) {
+            byte flag = in.readByte();
+
+            if (flag == NULL)
+                arr[i] = null;
+            else {
+                if (flag != DATE)
+                    throw new BinaryObjectException("Invalid flag value: " + flag);
+
+                arr[i] = doReadDate();
+            }
+        }
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    private Timestamp[] doReadTimestampArray() throws BinaryObjectException {
+        int hPos = in.position() - 1;
+
+        int len = in.readInt();
+
+        Timestamp[] arr = new Timestamp[len];
+
+        setHandler(arr, hPos);
+
+        for (int i = 0; i < len; i++) {
+            byte flag = in.readByte();
+
+            if (flag == NULL)
+                arr[i] = null;
+            else {
+                if (flag != TIMESTAMP)
+                    throw new BinaryObjectException("Invalid flag value: " + flag);
+
+                arr[i] = doReadTimestamp();
+            }
+        }
+
+        return arr;
+    }
+
+    /**
+     * @param deep Deep flag.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    private Object[] doReadObjectArray(boolean deep) throws BinaryObjectException {
+        int hPos = in.position() - 1;
+
+        Class compType = doReadClass();
+
+        int len = in.readInt();
+
+        Object[] arr = deep ? (Object[])Array.newInstance(compType, len) : new Object[len];
+
+        setHandler(arr, hPos);
+
+        for (int i = 0; i < len; i++)
+            arr[i] = deep ? doReadObject() : unmarshal();
+
+        return arr;
+    }
+
+    /**
+     * @param deep Deep flag.
+     * @param cls Collection class.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @SuppressWarnings("unchecked")
+    private Collection<?> doReadCollection(boolean deep, @Nullable Class<? extends Collection> cls)
+        throws BinaryObjectException {
+        int hPos = in.position() - 1;
+
+        int size = in.readInt();
+
+        assert size >= 0;
+
+        byte colType = in.readByte();
+
+        Collection<Object> col;
+
+        if (cls != null) {
+            try {
+                Constructor<? extends Collection> cons = cls.getConstructor();
+
+                col = cons.newInstance();
+            }
+            catch (NoSuchMethodException ignored) {
+                throw new BinaryObjectException("Collection class doesn't have public default constructor: " +
+                    cls.getName());
+            }
+            catch (InvocationTargetException | InstantiationException | IllegalAccessException e) {
+                throw new BinaryObjectException("Failed to instantiate collection: " + cls.getName(), e);
+            }
+        }
+        else {
+            switch (colType) {
+                case ARR_LIST:
+                    col = new ArrayList<>(size);
+
+                    break;
+
+                case LINKED_LIST:
+                    col = new LinkedList<>();
+
+                    break;
+
+                case HASH_SET:
+                    col = U.newHashSet(size);
+
+                    break;
+
+                case LINKED_HASH_SET:
+                    col = U.newLinkedHashSet(size);
+
+                    break;
+
+                case TREE_SET:
+                    col = new TreeSet<>();
+
+                    break;
+
+                case CONC_SKIP_LIST_SET:
+                    col = new ConcurrentSkipListSet<>();
+
+                    break;
+
+                case USER_SET:
+                    col = U.newHashSet(size);
+
+                    break;
+
+                case USER_COL:
+                    col = new ArrayList<>(size);
+
+                    break;
+
+                default:
+                    throw new BinaryObjectException("Invalid collection type: " + colType);
+            }
+        }
+
+        setHandler(col, hPos);
+
+        for (int i = 0; i < size; i++)
+            col.add(deep ? doReadObject() : unmarshal());
+
+        return col;
+    }
+
+    /**
+     * @param deep Deep flag.
+     * @param cls Map class.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    @SuppressWarnings("unchecked")
+    private Map<?, ?> doReadMap(boolean deep, @Nullable Class<? extends Map> cls)
+        throws BinaryObjectException {
+        int hPos = in.position() - 1;
+
+        int size = in.readInt();
+
+        assert size >= 0;
+
+        byte mapType = in.readByte();
+
+        Map<Object, Object> map;
+
+        if (cls != null) {
+            try {
+                Constructor<? extends Map> cons = cls.getConstructor();
+
+                map = cons.newInstance();
+            }
+            catch (NoSuchMethodException ignored) {
+                throw new BinaryObjectException("Map class doesn't have public default constructor: " +
+                    cls.getName());
+            }
+            catch (InvocationTargetException | InstantiationException | IllegalAccessException e) {
+                throw new BinaryObjectException("Failed to instantiate map: " + cls.getName(), e);
+            }
+        }
+        else {
+            switch (mapType) {
+                case HASH_MAP:
+                    map = U.newHashMap(size);
+
+                    break;
+
+                case LINKED_HASH_MAP:
+                    map = U.newLinkedHashMap(size);
+
+                    break;
+
+                case TREE_MAP:
+                    map = new TreeMap<>();
+
+                    break;
+
+                case CONC_HASH_MAP:
+                    map = new ConcurrentHashMap<>(size);
+
+                    break;
+
+                case USER_COL:
+                    map = U.newHashMap(size);
+
+                    break;
+
+                case PROPERTIES_MAP:
+                    map = new Properties();
+
+                    break;
+
+                default:
+                    throw new BinaryObjectException("Invalid map type: " + mapType);
+            }
+        }
+
+        setHandler(map, hPos);
+
+        for (int i = 0; i < size; i++)
+            map.put(deep ? doReadObject() : unmarshal(), deep ? doReadObject() : unmarshal());
+
+        return map;
+    }
+
+    /**
+     * @param deep Deep flag.
+     * @return Value.
+     * @throws org.apache.ignite.binary.BinaryObjectException In case of error.
+     */
+    private Map.Entry<?, ?> doReadMapEntry(boolean deep) throws BinaryObjectException {
+        int hPos = in.position() - 1;
+
+        Object val1 = deep ? doReadObject() : unmarshal();
+        Object val2 = deep ? doReadObject() : unmarshal();
+
+        GridMapEntry entry = new GridMapEntry<>(val1, val2);
+
+        setHandler(entry, hPos);
+
+        return entry;
+    }
+
+    /**
+     * @return Value.
+     */
+    private BinaryObject doReadPortableObject() {
+        if (in.offheapPointer() > 0) {
+            int len = in.readInt();
+
+            int pos = in.position();
+
+            in.position(in.position() + len);
+
+            int start = in.readInt();
+
+            return new BinaryObjectOffheapImpl(ctx, in.offheapPointer() + pos, start, len);
+        }
+        else {
+            byte[] arr = doReadByteArray();
+            int start = in.readInt();
+
+            return new BinaryObjectImpl(ctx, arr, start);
+        }
+    }
+
+    /**
+     * @param cls Enum class.
+     * @return Value.
+     */
+    private Enum<?> doReadEnum(Class<?> cls) throws BinaryObjectException {
+        if (!cls.isEnum())
+            throw new BinaryObjectException("Class does not represent enum type: " + cls.getName());
+
+        int ord = in.readInt();
+
+        return ord >= 0 ? (Enum<?>)GridEnumCache.get(cls)[ord] : null;
+    }
+
+    /**
+     * @param cls Enum class.
+     * @return Value.
+     */
+    private Object[] doReadEnumArray(Class<?> cls) throws BinaryObjectException {
+        int len = in.readInt();
+
+        Object[] arr = (Object[])Array.newInstance(cls, len);
+
+        for (int i = 0; i < len; i++) {
+            byte flag = in.readByte();
+
+            if (flag == NULL)
+                arr[i] = null;
+            else
+                arr[i] = doReadEnum(doReadClass());
+        }
+
+        return arr;
+    }
+
+    /**
+     * @return Value.
+     */
+    private Class doReadClass() throws BinaryObjectException {
+        return doReadClass(in.readInt());
+    }
+
+    /**
+     * @param typeId Type id.
+     * @return Value.
+     */
+    private Class doReadClass(int typeId) throws BinaryObjectException {
+        Class cls;
+
+        if (typeId == OBJECT_TYPE_ID)
+            return Object.class;
+
+        if (typeId != UNREGISTERED_TYPE_ID)
+            cls = ctx.descriptorForTypeId(true, typeId, ldr).describedClass();
+        else {
+            byte flag = in.readByte();
+
+            if (flag != STRING)
+                throw new BinaryObjectException("No class definition for typeId: " + typeId);
+
+            String clsName = doReadString();
+
+            try {
+                cls = U.forName(clsName, ldr);
+            }
+            catch (ClassNotFoundException e) {
+                throw new BinaryInvalidTypeException("Failed to load the class: " + clsName, e);
+            }
+
+            // forces registering of class by type id, at least locally
+            ctx.descriptorForClass(cls);
+        }
+
+        return cls;
+    }
+
+    /**
+     * @param name Field name.
+     * @return Field offset.
+     */
+    private int fieldId(String name) {
+        assert name != null;
+
+        parseHeaderIfNeeded();
+
+        assert typeId != UNREGISTERED_TYPE_ID;
+
+        if (idMapper == null)
+            idMapper = ctx.userTypeIdMapper(typeId);
+
+        return idMapper.fieldId(typeId, name);
+    }
+
+    /**
+     * Create schema.
+     *
+     * @return Schema.
+     */
+    public PortableSchema createSchema() {
+        parseHeaderIfNeeded();
+
+        LinkedHashMap<Integer, Integer> fields = new LinkedHashMap<>();
+
+        int searchPos = footerStart;
+        int searchEnd = searchPos + footerLen;
+
+        while (searchPos < searchEnd) {
+            int fieldId = in.readIntPositioned(searchPos);
+
+            fields.put(fieldId, searchPos + 4 - footerStart);
+
+            searchPos += 8;
+        }
+
+        return new PortableSchema(fields);
+    }
+
+    /**
+     * @param id Field ID.
+     * @return Field offset.
+     */
+    private int fieldOffset(int id) {
+        assert hdrLen != 0;
+
+        if (footerLen == 0)
+            return 0;
+
+        int searchPos = footerStart;
+        int searchTail = searchPos + footerLen;
+
+        if (hasLowFieldsCount(footerLen)) {
+            while (true) {
+                if (searchPos >= searchTail)
+                    return 0;
+
+                int id0 = in.readIntPositioned(searchPos);
+
+                if (id0 == id) {
+                    int pos = start + in.readIntPositioned(searchPos + 4);
+
+                    in.position(pos);
+
+                    return pos;
+                }
+
+                searchPos += 8;
+            }
+        }
+        else {
+            PortableSchema schema0 = schema;
+
+            if (schema0 == null) {
+                schema0 = ctx.schemaRegistry(typeId).schema(schemaId);
+
+                if (schema0 == null) {
+                    schema0 = createSchema();
+
+                    ctx.schemaRegistry(typeId).addSchema(schemaId, schema0);
+                }
+
+                schema = schema0;
+            }
+
+            int fieldOffsetPos = schema.offset(id);
+
+            if (fieldOffsetPos != 0) {
+                int pos = start + in.readIntPositioned(footerStart + fieldOffsetPos);
+
+                in.position(pos);
+
+                return pos;
+            }
+            else
+                return 0;
+        }
+    }
+
+    /**
+     * Check whether object has low amount of fields.
+     *
+     * @param footerLen Footer length.
+     */
+    private boolean hasLowFieldsCount(int footerLen) {
+        assert hdrParsed;
+
+        return footerLen < (FIELD_DESC_LEN << 4);
+    }
+
+    /** {@inheritDoc} */
+    @Override public int readUnsignedByte() throws IOException {
+        return readByte() & 0xff;
+    }
+
+    /** {@inheritDoc} */
+    @Override public int readUnsignedShort() throws IOException {
+        return readShort() & 0xffff;
+    }
+
+    /** {@inheritDoc} */
+    @Override public String readLine() throws IOException {
+        SB sb = new SB();
+
+        int b;
+
+        while ((b = read()) >= 0) {
+            char c = (char)b;
+
+            switch (c) {
+                case '\n':
+                    return sb.toString();
+
+                case '\r':
+                    b = read();
+
+                    if (b < 0 || b == '\n')
+                        return sb.toString();
+                    else
+                        sb.a((char)b);
+
+                    break;
+
+                default:
+                    sb.a(c);
+            }
+        }
+
+        return sb.toString();
+    }
+
+    /** {@inheritDoc} */
+    @SuppressWarnings("ConstantConditions")
+    @NotNull @Override public String readUTF() throws IOException {
+        return readString();
+    }
+
+    /** {@inheritDoc} */
+    @SuppressWarnings("NullableProblems")
+    @Override public void readFully(byte[] b) throws IOException {
+        readFully(b, 0, b.length);
+    }
+
+    /** {@inheritDoc} */
+    @SuppressWarnings("NullableProblems")
+    @Override public void readFully(byte[] b, int off, int len) throws IOException {
+        int cnt = in.read(b, off, len);
+
+        if (cnt < len)
+            throw new EOFException();
+    }
+
+    /** {@inheritDoc} */
+    @Override public int skipBytes(int n) throws IOException {
+        int toSkip = Math.min(in.remaining(), n);
+
+        in.position(in.position() + toSkip);
+
+        return toSkip;
+    }
+
+    /** {@inheritDoc} */
+    @Override public int read() throws IOException {
+        return readByte();
+    }
+
+    /** {@inheritDoc} */
+    @Override public int read(byte[] b) throws IOException {
+        return read(b, 0, b.length);
+    }
+
+    /** {@inheritDoc} */
+    @Override public int read(byte[] b, int off, int len) throws IOException {
+        return in.read(b, off, len);
+    }
+
+    /** {@inheritDoc} */
+    @Override public long skip(long n) throws IOException {
+        return skipBytes((int) n);
+    }
+
+    /** {@inheritDoc} */
+    @Override public int available() throws IOException {
+        return in.remaining();
+    }
+
+    /** {@inheritDoc} */
+    @Override public void close() throws IOException {
+        // No-op.
+    }
+
+    /**
+     * Flag.
+     */
+    private static enum Flag {
+        /** Null. */
+        NULL,
+
+        /** Handle. */
+        HANDLE,
+
+        /** Regular. */
+        NORMAL
+    }
+}


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