com.amazonaws.services.dynamodbv2.xspec.LiteralOperand Maven / Gradle / Ivy
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/*
* Copyright 2015-2020 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 java.util.Map;
import java.util.Set;
/**
* Represents a literal value in building expressions.
*
* This object is as immutable (or unmodifiable) as the underlying value given
* during construction.
*/
class LiteralOperand extends Operand {
private final Object value;
/**
* Represents a null value.
*/
LiteralOperand() {
this.value = null;
}
/**
* @param value
* must be a supported type by the DynamoDB Document API.
*/
LiteralOperand(Object value) {
this.value = value;
}
/**
* Must be a set of String, Number, or byte[].
*/
LiteralOperand(Set value) {
this.value = value;
}
/**
* Must be a list of supported types by the DynamoDB Document API.
*/
LiteralOperand(List value) {
this.value = value;
}
/**
* Each value of the map must be a supported type by the DynamoDB Document
* API.
*/
LiteralOperand(Map value) {
this.value = value;
}
LiteralOperand(boolean value) {
this.value = value;
}
@Override
final String asSubstituted(SubstitutionContext context) {
return context.valueTokenFor(value);
}
@Override
public String toString() {
return String.valueOf(value);
}
}