org.apache.hadoop.hive.ql.optimizer.ppr.OpWalkerCtx Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.hadoop.hive.ql.optimizer.ppr;
import java.util.HashMap;
import org.apache.hadoop.hive.ql.exec.TableScanOperator;
import org.apache.hadoop.hive.ql.lib.NodeProcessorCtx;
import org.apache.hadoop.hive.ql.plan.ExprNodeDesc;
/**
* Context class for operator tree walker for partition pruner.
* TODO: this class may be not useful.
*/
public class OpWalkerCtx implements NodeProcessorCtx {
/**
* Map from tablescan operator to partition pruning predicate that is
* initialized from the ParseContext.
*/
private final HashMap opToPartPruner;
/**
* Constructor.
*/
public OpWalkerCtx(HashMap opToPartPruner) {
this.opToPartPruner = opToPartPruner;
}
public HashMap getOpToPartPruner() {
return opToPartPruner;
}
}