/**
* 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.expr.fn.impl.conv;
import io.netty.buffer.DrillBuf;
import javax.inject.Inject;
import org.apache.drill.exec.expr.DrillSimpleFunc;
import org.apache.drill.exec.expr.annotations.FunctionTemplate;
import org.apache.drill.exec.expr.annotations.FunctionTemplate.FunctionScope;
import org.apache.drill.exec.expr.annotations.FunctionTemplate.NullHandling;
import org.apache.drill.exec.expr.annotations.Output;
import org.apache.drill.exec.expr.annotations.Param;
import org.apache.drill.exec.expr.holders.BigIntHolder;
import org.apache.drill.exec.expr.holders.VarBinaryHolder;
@FunctionTemplate(name = "convert_toBIGINT_BE", scope = FunctionScope.SIMPLE, nulls = NullHandling.NULL_IF_NULL)
public class BigIntBEConvertTo implements DrillSimpleFunc {
@Param BigIntHolder in;
@Output VarBinaryHolder out;
@Inject DrillBuf buffer;
@Override
public void setup() {
buffer = buffer.reallocIfNeeded(8);
}
@Override
public void eval() {
buffer.clear();
buffer.writeLong(Long.reverseBytes(in.value));
out.buffer = buffer;
out.start = 0;
out.end = 8;
}
}