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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.document.predicate;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
/**
* @author Simon Thoresen Hult
*/
public class Conjunction extends PredicateOperator {
private List<Predicate> operands;
public Conjunction(Predicate... operands) {
this(Arrays.asList(operands));
}
public Conjunction(List<? extends Predicate> operands) {
this.operands = new ArrayList<>(operands);
}
public Conjunction addOperand(Predicate operand) {
operands.add(operand);
return this;
}
public Conjunction addOperands(Collection<? extends Predicate> operands) {
this.operands.addAll(operands);
return this;
}
public Conjunction setOperands(Collection<? extends Predicate> operands) {
this.operands.clear();
this.operands.addAll(operands);
return this;
}
@Override
public List<Predicate> getOperands() {
return operands;
}
@Override
public Conjunction clone() throws CloneNotSupportedException {
Conjunction obj = (Conjunction)super.clone();
obj.operands = new ArrayList<>(operands.size());
for (Predicate operand : operands) {
obj.operands.add(operand.clone());
}
return obj;
}
@Override
public int hashCode() {
return operands.hashCode();
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof Conjunction)) {
return false;
}
Conjunction rhs = (Conjunction)obj;
if (!operands.equals(rhs.operands)) {
return false;
}
return true;
}
@Override
protected void appendTo(StringBuilder out) {
for (Iterator<Predicate> it = operands.iterator(); it.hasNext(); ) {
Predicate operand = it.next();
if (operand instanceof Disjunction || operand instanceof FeatureConjunction) {
out.append('(');
operand.appendTo(out);
out.append(')');
} else {
operand.appendTo(out);
}
if (it.hasNext()) {
out.append(" and ");
}
}
}
}
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