com.amazonaws.services.dynamodbv2.xspec.InCondition Maven / Gradle / Ivy
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/*
* Copyright 2015-2016 Amazon Technologies, Inc.
*
* Licensed 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://aws.amazon.com/apache2.0
*
* This file 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 com.amazonaws.services.dynamodbv2.xspec;
import java.util.List;
import com.amazonaws.annotation.Beta;
/**
* Represents a IN condition in building condition expression.
*
* Underlying grammar:
*
*
* operand IN ( operand (',' operand (, ...) ))
*
*
* This object is as immutable (or unmodifiable) as the underlying set of
* operands.
*/
@Beta
public final class InCondition extends Condition {
private final PathOperand attribute;
private final List operands;
/**
* @param operands assumed to be allocated on the stack so it will remain
* externally unmodifiable
*/
InCondition(PathOperand attribute, List operands) {
this.attribute = attribute;
this.operands = operands;
}
@Override
String asSubstituted(SubstitutionContext context) {
StringBuilder sb = new StringBuilder(attribute.asSubstituted(context))
.append(" IN (");
boolean first = true;
for (Operand operand : operands) {
if (first) {
sb.append(operand.asSubstituted(context));
first = false;
} else {
sb.append(", ").append(operand.asSubstituted(context));
}
}
return sb.append(")").toString();
}
@Override
boolean atomic() {
return true;
}
@Override
int precedence() {
return Precedence.IN.value();
}
}