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From paul-rogers <...@git.apache.org>
Subject [GitHub] drill pull request #708: DRILL-5152: Enhance the mock data source: better da...
Date Sat, 07 Jan 2017 21:01:33 GMT
Github user paul-rogers commented on a diff in the pull request:

    https://github.com/apache/drill/pull/708#discussion_r95063773
  
    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/store/mock/ColumnDef.java
---
    @@ -0,0 +1,178 @@
    +/*
    + * 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.drill.exec.store.mock;
    +
    +import org.apache.drill.common.types.TypeProtos.MinorType;
    +import org.apache.drill.exec.expr.TypeHelper;
    +import org.apache.drill.exec.store.mock.MockGroupScanPOP.MockColumn;
    +
    +/**
    + * Defines a column for the "enhanced" version of the mock data
    + * source. This class is built from the column definitions in either
    + * the physical plan or an SQL statement (which gives rise to a
    + * physical plan.)
    + */
    +
    +public class ColumnDef {
    +  public MockColumn mockCol;
    +  public String name;
    +  public int width;
    +  public FieldGen generator;
    +
    +  public ColumnDef( MockColumn mockCol ) {
    +    this.mockCol = mockCol;
    +    name = mockCol.getName();
    +    width = TypeHelper.getSize(mockCol.getMajorType());
    +    makeGenerator( );
    +  }
    +
    +  /**
    +   * Create the data generator class for this column. The generator is
    +   * created to match the data type by default. Or, the plan can
    +   * specify a generator class (in which case the plan must ensure that
    +   * the generator produces the correct value for the column data type.)
    +   * The generator names a class: either a fully qualified name, or a
    +   * class in this package.
    +   */
    +
    +  private void makeGenerator( ) {
    +    String genName = mockCol.getGenerator( );
    +    if ( genName != null ) {
    +      if ( ! genName.contains(".") ) {
    +        genName = "org.apache.drill.exec.store.mock." + genName;
    +      }
    +      try {
    +        ClassLoader cl = getClass( ).getClassLoader();
    +        Class<?> genClass = cl.loadClass(genName);
    +        generator = (FieldGen) genClass.newInstance( );
    +      } catch (ClassNotFoundException | InstantiationException
    +          | IllegalAccessException | ClassCastException e) {
    +        throw new IllegalArgumentException( "Generator " + genName + " is undefined for
mock field " + name );
    +      }
    +      generator.setup( this );
    +      return;
    +    }
    +
    +    makeDefaultGenerator( );
    +  }
    +
    +  private void makeDefaultGenerator( ) {
    +
    +    MinorType minorType = mockCol.getMinorType();
    +    switch ( minorType ) {
    +    case BIGINT:
    +      break;
    +    case BIT:
    +      break;
    +    case DATE:
    +      break;
    +    case DECIMAL18:
    +      break;
    +    case DECIMAL28DENSE:
    +      break;
    +    case DECIMAL28SPARSE:
    +      break;
    +    case DECIMAL38DENSE:
    +      break;
    +    case DECIMAL38SPARSE:
    +      break;
    +    case DECIMAL9:
    +      break;
    +    case FIXED16CHAR:
    +      break;
    +    case FIXEDBINARY:
    +      break;
    +    case FIXEDCHAR:
    +      break;
    +    case FLOAT4:
    +      break;
    +    case FLOAT8:
    +      generator = new DoubleGen( );
    +      break;
    +    case GENERIC_OBJECT:
    +      break;
    +    case INT:
    +      generator = new IntGen( );
    +      break;
    +    case INTERVAL:
    +      break;
    +    case INTERVALDAY:
    +      break;
    +    case INTERVALYEAR:
    +      break;
    +    case LATE:
    +      break;
    +    case LIST:
    +      break;
    +    case MAP:
    +      break;
    +    case MONEY:
    +      break;
    +    case NULL:
    +      break;
    +    case SMALLINT:
    +      break;
    +    case TIME:
    +      break;
    +    case TIMESTAMP:
    +      break;
    +    case TIMESTAMPTZ:
    +      break;
    +    case TIMETZ:
    +      break;
    +    case TINYINT:
    +      break;
    +    case UINT1:
    +      break;
    +    case UINT2:
    +      break;
    +    case UINT4:
    +      break;
    +    case UINT8:
    +      break;
    +    case UNION:
    +      break;
    +    case VAR16CHAR:
    +      break;
    +    case VARBINARY:
    +      break;
    +    case VARCHAR:
    +      generator = new StringGen( );
    +      break;
    +    default:
    +      break;
    +    }
    +    if ( generator == null ) {
    +      throw new IllegalArgumentException( "No default column generator for column " +
name + " of type " + minorType );
    +    }
    +    generator.setup(this);
    +  }
    +
    +  public ColumnDef( MockColumn mockCol, int rep ) {
    +    this( mockCol );
    +    name = name += Integer.toString(rep);
    --- End diff --
    
    Typo. Fixed.


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