/*
* 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.pig.test.udf.evalfunc;
import java.io.IOException;
import java.util.Properties;
import org.apache.pig.data.DataType;
import org.apache.pig.EvalFunc;
import org.apache.pig.data.Tuple;
import org.apache.pig.impl.logicalLayer.schema.Schema;
import org.apache.pig.impl.util.UDFContext;
public class UDFContextTestUDF extends EvalFunc<String> {
String signature;
@Override
public String exec(Tuple input) throws IOException {
Schema sch = (Schema)UDFContext.getUDFContext()
.getUDFProperties(this.getClass()).get("pig.evalfunc.inputschema."+signature);
return sch.toString();
}
@Override
public void setUDFContextSignature(String signature) {
this.signature = signature;
}
@Override
public Schema outputSchema(Schema input) {
Properties props = UDFContext.getUDFContext().getUDFProperties(this.getClass());
props.put("pig.evalfunc.inputschema."+signature, input);
return new Schema(new Schema.FieldSchema(null, DataType.CHARARRAY));
}
}