/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* 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 eu.stratosphere.test.recordJobs.graph.triangleEnumUtil;
import eu.stratosphere.api.java.record.io.DelimitedInputFormat;
import eu.stratosphere.configuration.Configuration;
import eu.stratosphere.types.IntValue;
import eu.stratosphere.types.Record;
/**
*
*/
public final class EdgeInputFormat extends DelimitedInputFormat {
private static final long serialVersionUID = 1L;
public static final String ID_DELIMITER_CHAR = "edgeinput.delimiter";
private final IntValue i1 = new IntValue();
private final IntValue i2 = new IntValue();
private char delimiter;
// --------------------------------------------------------------------------------------------
@Override
public Record readRecord(Record target, byte[] bytes, int offset, int numBytes) {
final int limit = offset + numBytes;
int first = 0, second = 0;
final char delimiter = this.delimiter;
int pos = offset;
while (pos < limit && bytes[pos] != delimiter) {
first = first * 10 + (bytes[pos++] - '0');
}
pos += 1;// skip the delimiter
while (pos < limit) {
second = second * 10 + (bytes[pos++] - '0');
}
if (first <= 0 || second <= 0 || first == second) {
return null;
}
this.i1.setValue(first);
this.i2.setValue(second);
target.setField(0, this.i1);
target.setField(1, this.i2);
return target;
}
// --------------------------------------------------------------------------------------------
@Override
public void configure(Configuration parameters) {
super.configure(parameters);
this.delimiter = (char) parameters.getInteger(ID_DELIMITER_CHAR, ',');
}
}