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 /*
  * Copyright 2015-2015 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;
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. = null;
    }

    

Parameters:
value must be a supported type by the DynamoDB Document API.
    LiteralOperand(Object value) {
        this. = value;
    }

    
Must be a set of String, Number, or byte[].
    LiteralOperand(Set<?> value) {
        this. = value;
    }

    
Must be a list of supported types by the DynamoDB Document API.
    LiteralOperand(List<?> value) {
        this. = value;
    }

    
Each value of the map must be a supported type by the DynamoDB Document API.
    LiteralOperand(Map<String, ?> value) {
        this. = value;
    }
    LiteralOperand(boolean value) {
        this. = value;
    }
    @Override
    final String asSubstituted(SubstitutionContext context) {
        return context.valueTokenFor();
    }
    @Override
    public String toString() {
        return String.valueOf();
    }
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