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From elecha...@apache.org
Subject svn commit: r178898 - /directory/sandbox/trunk/asn1-new-codec/src/java/org/apache/asn1/ldap/codec/grammars/AbandonRequestGrammar.java
Date Sat, 28 May 2005 23:08:34 GMT
Author: elecharny
Date: Sat May 28 16:08:34 2005
New Revision: 178898

URL: http://svn.apache.org/viewcvs?rev=178898&view=rev
Log:
Added the AbandonRequest grammar

Added:
    directory/sandbox/trunk/asn1-new-codec/src/java/org/apache/asn1/ldap/codec/grammars/AbandonRequestGrammar.java

Added: directory/sandbox/trunk/asn1-new-codec/src/java/org/apache/asn1/ldap/codec/grammars/AbandonRequestGrammar.java
URL: http://svn.apache.org/viewcvs/directory/sandbox/trunk/asn1-new-codec/src/java/org/apache/asn1/ldap/codec/grammars/AbandonRequestGrammar.java?rev=178898&view=auto
==============================================================================
--- directory/sandbox/trunk/asn1-new-codec/src/java/org/apache/asn1/ldap/codec/grammars/AbandonRequestGrammar.java
(added)
+++ directory/sandbox/trunk/asn1-new-codec/src/java/org/apache/asn1/ldap/codec/grammars/AbandonRequestGrammar.java
Sat May 28 16:08:34 2005
@@ -0,0 +1,158 @@
+/*
+ *   Copyright 2005 The Apache Software Foundation
+ *
+ *   Licensed 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.asn1.ldap.codec.grammars;
+
+import org.apache.asn1.DecoderException;
+import org.apache.asn1.ber.containers.IAsn1Container;
+import org.apache.asn1.ber.grammar.AbstractGrammar;
+import org.apache.asn1.ber.grammar.GrammarAction;
+import org.apache.asn1.ber.grammar.GrammarTransition;
+import org.apache.asn1.ber.grammar.IGrammar;
+import org.apache.asn1.ber.tlv.TLV;
+import org.apache.asn1.ber.tlv.Value;
+import org.apache.asn1.ldap.codec.LdapMessageContainer;
+import org.apache.asn1.ldap.codec.utils.IntegerDecoder;
+import org.apache.asn1.ldap.pojo.AbandonRequestPOJO;
+import org.apache.asn1.ldap.pojo.LdapMessagePOJO;
+
+import org.apache.log4j.Logger;
+
+
+/**
+ * This class implements the abandon request. All the actions are declared in this
+ * class. As it is a singleton, these declaration are only done once.
+ * 
+ * If an action is to be added or modified, this is where the work is to be done !
+ * 
+ * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
+ */
+public class AbandonRequestGrammar extends AbstractGrammar implements IGrammar
+{
+    //~ Static fields/initializers -----------------------------------------------------------------
+
+    /** The logger */
+    private static final Logger log = Logger.getLogger( AbandonRequestGrammar.class );
+
+    /** Logging speed up  */
+    private static final boolean DEBUG = log.isDebugEnabled();
+
+    /** The instance of grammar. AbandonRequestGrammar is a singleton */
+    private static IGrammar instance = new AbandonRequestGrammar();
+
+    //~ Constructors -------------------------------------------------------------------------------
+
+    /**
+     * Creates a new AbandonRequestGrammar object.
+     */
+    private AbandonRequestGrammar()
+    {
+
+        name       = AbandonRequestGrammar.class.getName();
+
+        statesEnum = LdapStatesEnum.getInstance();
+
+        // We have 4 differents states, so 3 transitions between states.
+        super.transitions = new GrammarTransition[LdapStatesEnum.LAST_ABANDON_REQUEST_STATE][256];
+
+        //--------------------------------------------------------------------------------------------
+        // AbandonRequest Message ID
+        //--------------------------------------------------------------------------------------------
+        //  AbandonRequest ::= [APPLICATION 16] MessageID (Tag)
+        // The tag must be 0x50. It codes for an integer, as we use
+        // IMPLICIT tags (we won't have a 0x02 tag to code the integer).
+        // Nothing special to do.
+        super.transitions[LdapStatesEnum.ABANDON_REQUEST_MESSAGE_ID_TAG][0x50] =
+            new GrammarTransition( LdapStatesEnum.ABANDON_REQUEST_MESSAGE_ID_TAG,
+                LdapStatesEnum.ABANDON_REQUEST_MESSAGE_ID_LENGTH, null );
+
+        //  AbandonRequest ::= [APPLICATION 16] MessageID (Length)
+        // Checks the length
+        super.transitions[LdapStatesEnum.ABANDON_REQUEST_MESSAGE_ID_LENGTH][0x50] =
+            new GrammarTransition( LdapStatesEnum.ABANDON_REQUEST_MESSAGE_ID_LENGTH,
+                LdapStatesEnum.ABANDON_REQUEST_MESSAGE_ID_VALUE,
+                new GrammarAction( "Check MessageId Length " )
+                {
+                    public void action( IAsn1Container container ) throws DecoderException
+                    {
+
+                        LdapMessageContainer ldapMessageContainer = ( ( LdapMessageContainer
)
+                                container );
+                        checkLength( ldapMessageContainer.getLdapMessage(),
+                            ldapMessageContainer.getCurrentTLV() );
+
+                        return;
+                    }
+                } );
+
+        //  AbandonRequest ::= [APPLICATION 16] MessageID (Value)
+        // Checks that MessageId is in [0 .. 2147483647] and store the value in the AbandonRequest
POJO
+        // (2147483647 = Integer.MAX_VALUE)
+        // This is the last state.
+        super.transitions[LdapStatesEnum.ABANDON_REQUEST_MESSAGE_ID_VALUE][0x50] =
+            new GrammarTransition( LdapStatesEnum.ABANDON_REQUEST_MESSAGE_ID_VALUE,
+                LdapStatesEnum.GRAMMAR_END, new GrammarAction( "Store MessageId" )
+                {
+                    public void action( IAsn1Container container ) throws DecoderException
+                    {
+
+                        LdapMessageContainer ldapMessageContainer = ( LdapMessageContainer
)
+                            container;
+                        LdapMessagePOJO      ldapMessage          =
+                            ldapMessageContainer.getLdapMessage();
+
+                        // The current TLV should be a integer
+                        // We get it and store it in MessageId
+                        TLV   tlv       = ldapMessageContainer.getCurrentTLV();
+
+                        Value value     = tlv.getValue();
+
+                        int   messageId = IntegerDecoder.parse( value, 0, Integer.MAX_VALUE
);
+
+                        if ( ( messageId < 0 ) || ( messageId > Integer.MAX_VALUE )
)
+                        {
+                            throw new DecoderException(
+                                "The message ID must be between (0 .. 2 147 483 647)" );
+                        }
+                        else
+                        {
+
+                            // Ok, the Message ID is correct. We have to allocate an
+                            // abandonRequest POJO to store the value, and store the
+                            // POJO in the LDAPMessage
+                            AbandonRequestPOJO abandonRequest = new AbandonRequestPOJO();
+                            abandonRequest.setMessageId( messageId );
+                            ldapMessage.setProtocolOP( abandonRequest );
+
+                            return;
+                        }
+                    }
+                } );
+
+    }
+
+    //~ Methods ------------------------------------------------------------------------------------
+
+    /**
+     * Get the instance of this grammar
+     *
+     * @return An instance on the AbandonRequest Grammar
+     */
+    public static IGrammar getInstance()
+    {
+        return instance;
+    }
+}



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