/*
* Copyright (c) 2011. The Apache Software Foundation
*
* 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.hadoop.hbase.hbql.mapping;
import org.apache.expreval.expr.TypeSupport;
import org.apache.hadoop.hbase.hbql.client.ColumnVersionMap;
import org.apache.hadoop.hbase.hbql.client.HBqlException;
import java.lang.reflect.Field;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Map;
public class VersionAnnotationAttrib extends FieldAttrib {
public VersionAnnotationAttrib(final String familyName,
final String columnName,
final Field field,
final FieldType fieldType,
final String getter,
final String setter) throws HBqlException {
super(familyName, columnName, field, fieldType, getter, setter);
final ColumnVersionMap versionAnno = field.getAnnotation(ColumnVersionMap.class);
final String annoname = "@ColumnVersionMap annotation";
// Check if type is a Map
if (!TypeSupport.isParentClass(Map.class, field.getType()))
throw new HBqlException(getObjectQualifiedName(field) + "has a " + annoname + " so it "
+ "must implement the Map interface");
// Look up type of map value
final ParameterizedType ptype = (ParameterizedType)field.getGenericType();
final Type[] typeargs = ptype.getActualTypeArguments();
final Type mapValueType = typeargs[1];
// TODO Deal with type check on mapValueType
this.defineAccessors();
}
public boolean isACurrentValue() {
return false;
}
public boolean isAVersionValue() {
return true;
}
}