/*
*
* Copyright 2013 LinkedIn Corp. All rights reserved
*
* 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 com.linkedin.databus.bootstrap.utils.bst_reader.filter;
import org.apache.avro.generic.GenericRecord;
import com.linkedin.databus.core.DbusEvent;
/**
* Implements a "==" constant filter for a payload field
*/
public class PayloadFieldEqFilter implements BootstrapReaderFilter
{
final String _fieldName;
final Object _constValue;
public PayloadFieldEqFilter(String fieldName, Object constValue)
{
_fieldName = fieldName;
_constValue = constValue;
}
/**
* @see com.linkedin.databus.bootstrap.utils.bst_reader.filter.BootstrapReaderFilter#matches(com.linkedin.databus.core.DbusEvent, org.apache.avro.generic.GenericRecord)
*/
@Override
public boolean matches(DbusEvent event, GenericRecord payload)
{
Object val = payload.get(_fieldName);
if (null == val) return false;
if (val instanceof Float)
{
return ((Float)val).floatValue() == ((Number)_constValue).floatValue();
}
else if (val instanceof Double)
{
return ((Double)val).doubleValue() == ((Number)_constValue).doubleValue();
}
else if (val instanceof Number)
{
return ((Number)val).longValue() == ((Number)_constValue).longValue();
}
else
{
return val.toString().compareTo(_constValue.toString()) == 0;
}
}
}