org.apache.hadoop.hive.ql.plan.FilterDesc 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 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.hadoop.hive.ql.plan;
import java.util.List;
import org.apache.hadoop.hive.ql.plan.Explain.Level;
/**
* FilterDesc.
*
*/
@Explain(displayName = "Filter Operator", explainLevels = { Level.USER, Level.DEFAULT, Level.EXTENDED })
public class FilterDesc extends AbstractOperatorDesc {
/**
* sampleDesc is used to keep track of the sampling descriptor.
*/
public static class SampleDesc implements Cloneable {
// The numerator of the TABLESAMPLE clause
private int numerator;
// The denominator of the TABLESAMPLE clause
private int denominator;
// Input files can be pruned
private boolean inputPruning;
public SampleDesc() {
}
public SampleDesc(int numerator, int denominator,
List tabBucketCols, boolean inputPruning) {
this.numerator = numerator;
this.denominator = denominator;
this.inputPruning = inputPruning;
}
public int getNumerator() {
return numerator;
}
public int getDenominator() {
return denominator;
}
public boolean getInputPruning() {
return inputPruning;
}
@Override
public Object clone() {
SampleDesc desc = new SampleDesc(numerator, denominator, null, inputPruning);
return desc;
}
public String toString() {
return inputPruning ? "BUCKET " + numerator + " OUT OF " + denominator: null;
}
}
private static final long serialVersionUID = 1L;
private org.apache.hadoop.hive.ql.plan.ExprNodeDesc predicate;
private boolean isSamplingPred;
private transient SampleDesc sampleDescr;
//Is this a filter that should perform a comparison for sorted searches
private boolean isSortedFilter;
public FilterDesc() {
}
public FilterDesc(
final org.apache.hadoop.hive.ql.plan.ExprNodeDesc predicate,
boolean isSamplingPred) {
this.predicate = predicate;
this.isSamplingPred = isSamplingPred;
sampleDescr = null;
}
public FilterDesc(
final org.apache.hadoop.hive.ql.plan.ExprNodeDesc predicate,
boolean isSamplingPred, final SampleDesc sampleDescr) {
this.predicate = predicate;
this.isSamplingPred = isSamplingPred;
this.sampleDescr = sampleDescr;
}
@Explain(displayName = "predicate", explainLevels = { Level.USER, Level.DEFAULT, Level.EXTENDED })
public String getPredicateString() {
StringBuffer sb = new StringBuffer();
PlanUtils.addExprToStringBuffer(predicate, sb);
return sb.toString();
}
public org.apache.hadoop.hive.ql.plan.ExprNodeDesc getPredicate() {
return predicate;
}
public void setPredicate(
final org.apache.hadoop.hive.ql.plan.ExprNodeDesc predicate) {
this.predicate = predicate;
}
@Explain(displayName = "isSamplingPred", explainLevels = { Level.EXTENDED })
public boolean getIsSamplingPred() {
return isSamplingPred;
}
public void setIsSamplingPred(final boolean isSamplingPred) {
this.isSamplingPred = isSamplingPred;
}
public SampleDesc getSampleDescr() {
return sampleDescr;
}
public void setSampleDescr(final SampleDesc sampleDescr) {
this.sampleDescr = sampleDescr;
}
@Explain(displayName = "sampleDesc", explainLevels = { Level.EXTENDED })
public String getSampleDescExpr() {
return sampleDescr == null ? null : sampleDescr.toString();
}
public boolean isSortedFilter() {
return isSortedFilter;
}
public void setSortedFilter(boolean isSortedFilter) {
this.isSortedFilter = isSortedFilter;
}
@Override
public Object clone() {
FilterDesc filterDesc = new FilterDesc(getPredicate().clone(), getIsSamplingPred());
if (getIsSamplingPred()) {
filterDesc.setSampleDescr(getSampleDescr());
}
filterDesc.setSortedFilter(isSortedFilter());
return filterDesc;
}
}