/**
* Copyright (C) 2009-2013 FoundationDB, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.foundationdb.sql.optimizer.plan;
import com.foundationdb.sql.optimizer.plan.JoinNode.JoinType;
/** A join implementation using Map. */
public class MapJoin extends BasePlanNode implements PlanWithInput
{
// This is non-null only until the map has been folded.
private JoinType joinType;
private PlanNode outer, inner;
public MapJoin(JoinType joinType, PlanNode outer, PlanNode inner) {
this.joinType = joinType;
this.outer = outer;
outer.setOutput(this);
this.inner = inner;
inner.setOutput(this);
}
public JoinType getJoinType() {
return joinType;
}
public void setJoinType(JoinType joinType) {
this.joinType = joinType;
}
public PlanNode getOuter() {
return outer;
}
public void setOuter(PlanNode outer) {
this.outer = outer;
outer.setOutput(this);
}
public PlanNode getInner() {
return inner;
}
public void setInner(PlanNode inner) {
this.inner = inner;
inner.setOutput(this);
}
@Override
public void replaceInput(PlanNode oldInput, PlanNode newInput) {
if (outer == oldInput) {
outer = newInput;
outer.setOutput(this);
}
if (inner == oldInput) {
inner = newInput;
inner.setOutput(this);
}
}
@Override
public boolean accept(PlanVisitor v) {
if (v.visitEnter(this)) {
if (outer.accept(v))
inner.accept(v);
}
return v.visitLeave(this);
}
@Override
public String summaryString(SummaryConfiguration configuration) {
StringBuilder str = new StringBuilder(super.summaryString(configuration));
str.append("(");
if (joinType != null) {
str.append(joinType);
}
str.append(")");
return str.toString();
}
@Override
protected void deepCopy(DuplicateMap map) {
super.deepCopy(map);
outer = (PlanNode)outer.duplicate(map);
inner = (PlanNode)inner.duplicate(map);
}
}