com.hazelcast.org.apache.calcite.interpreter.ProjectNode Maven / Gradle / Ivy
/*
* 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 com.hazelcast.com.liance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.com.hazelcast.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.hazelcast.org.apache.calcite.interpreter;
import com.hazelcast.org.apache.calcite.rel.core.Project;
/**
* Interpreter node that implements a
* {@link com.hazelcast.org.apache.calcite.rel.core.Project}.
*/
public class ProjectNode extends AbstractSingleNode {
private final Scalar scalar;
private final Context context;
private final int projectCount;
public ProjectNode(Compiler com.hazelcast.com.iler, Project rel) {
super(com.hazelcast.com.iler, rel);
this.projectCount = rel.getProjects().size();
this.scalar = com.hazelcast.com.iler.com.hazelcast.com.ile(rel.getProjects(),
rel.getInput().getRowType());
this.context = com.hazelcast.com.iler.createContext();
}
public void run() throws InterruptedException {
Row row;
while ((row = source.receive()) != null) {
context.values = row.getValues();
Object[] values = new Object[projectCount];
scalar.execute(context, values);
sink.send(new Row(values));
}
}
}