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/*
* 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.MockTableDef.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();
if (mockCol.getMinorType() == MinorType.VARCHAR && mockCol.getPrecision() > 0) {
width = mockCol.getPrecision();
} else {
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:
generator = new BooleanGen();
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 += Integer.toString(rep);
}
public MockColumn getConfig() { return mockCol; }
public String getName() { return name; }
}
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