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/*
* 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.Arrays;
import java.util.List;
import java.util.Objects;
import org.apache.hadoop.hive.ql.optimizer.signature.Signature;
import org.apache.hadoop.hive.ql.plan.Explain.Level;
import org.apache.hadoop.hive.ql.plan.Explain.Vectorization;
/**
* 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;
}
@Override
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 boolean syntheticJoinPredicate;
private transient SampleDesc sampleDescr;
//Is this a filter that should perform a comparison for sorted searches
private boolean isSortedFilter;
private transient boolean isGenerated;
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;
}
@Signature
public String getPredicateString() {
return PlanUtils.getExprListString(Arrays.asList(predicate));
}
public String getUserLevelExplainPredicateString() {
return PlanUtils.getExprListString(Arrays.asList(predicate), true);
}
@Explain(displayName = "predicate", postProcess = true)
public String getPredicateString(boolean postProcess) {
return PlanUtils.getExprListString(Arrays.asList(predicate), false, postProcess);
}
@Explain(displayName = "predicate", explainLevels = { Level.USER }, postProcess = true)
public String getUserLevelExplainPredicateString(boolean postProcess) {
return PlanUtils.getExprListString(Arrays.asList(predicate), true, postProcess);
}
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 })
@Signature
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 })
@Signature
public String getSampleDescExpr() {
return sampleDescr == null ? null : sampleDescr.toString();
}
public boolean isSortedFilter() {
return isSortedFilter;
}
public void setSortedFilter(boolean isSortedFilter) {
this.isSortedFilter = isSortedFilter;
}
/**
* Some filters are generated or implied, which means it is not in the query.
* It is added by the analyzer. For example, when we do an inner join, we add
* filters to exclude those rows with null join key values.
*/
public boolean isGenerated() {
return isGenerated;
}
public void setGenerated(boolean isGenerated) {
this.isGenerated = isGenerated;
}
public boolean isSyntheticJoinPredicate() {
return syntheticJoinPredicate;
}
public void setSyntheticJoinPredicate(boolean syntheticJoinPredicate) {
this.syntheticJoinPredicate = syntheticJoinPredicate;
}
@Override
public Object clone() {
FilterDesc filterDesc = new FilterDesc(getPredicate().clone(), getIsSamplingPred());
if (getIsSamplingPred()) {
filterDesc.setSampleDescr(getSampleDescr());
}
filterDesc.setSortedFilter(isSortedFilter());
return filterDesc;
}
public class FilterOperatorExplainVectorization extends OperatorExplainVectorization {
private final FilterDesc filterDesc;
private final VectorFilterDesc vectorFilterDesc;
public FilterOperatorExplainVectorization(FilterDesc filterDesc, VectorFilterDesc vectorFilterDesc) {
// Native vectorization supported.
super(vectorFilterDesc, true);
this.filterDesc = filterDesc;
this.vectorFilterDesc = vectorFilterDesc;
}
@Explain(vectorization = Vectorization.EXPRESSION, displayName = "predicateExpression", explainLevels = { Level.DEFAULT, Level.EXTENDED })
public String getPredicateExpression() {
return vectorFilterDesc.getPredicateExpression().toString();
}
}
@Explain(vectorization = Vectorization.OPERATOR, displayName = "Filter Vectorization", explainLevels = { Level.DEFAULT, Level.EXTENDED })
public FilterOperatorExplainVectorization getFilterVectorization() {
VectorFilterDesc vectorFilterDesc = (VectorFilterDesc) getVectorDesc();
if (vectorFilterDesc == null) {
return null;
}
return new FilterOperatorExplainVectorization(this, vectorFilterDesc);
}
@Override
public boolean isSame(OperatorDesc other) {
if (getClass().getName().equals(other.getClass().getName())) {
FilterDesc otherDesc = (FilterDesc) other;
return Objects.equals(getPredicateString(), otherDesc.getPredicateString()) &&
Objects.equals(getSampleDescExpr(), otherDesc.getSampleDescExpr()) &&
getIsSamplingPred() == otherDesc.getIsSamplingPred();
}
return false;
}
}