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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;
 
 import java.util.List;
 
 
A path operand that refers to a list attribute in DynamoDB; used for building expressions.

Use ExpressionSpecBuilder.L(java.lang.String) to instantiate this class.

 
 public final class L extends PathOperand {
 
     L(String path) {
         super(path);
     }

    
Returns a SetAction for adding the value of evaluating the specified ListAppend function as an attribute to an item. If this attribute already exists, it will be replaced by the new value.
 
     public SetAction set(ListAppendFunction listAppendFunction) {
         return new SetAction(thislistAppendFunction);
     }
 
     public FunctionCondition contains(Object value) {
         return new FunctionCondition("contains"this,
                 new LiteralOperand(value));
     }
 
     public ComparatorCondition eq(FunctionOperand value) {
         return new ComparatorCondition("="thisvalue);
     }
 
     public ComparatorCondition eq(L that) {
         return new ComparatorCondition("="thisthat);
     }
 
     public ComparatorCondition ne(FunctionOperand value) {
         return new ComparatorCondition("<>"thisvalue);
     }
 
     public ComparatorCondition ne(L that) {
         return new ComparatorCondition("<>"thisthat);
     }
 
     public IfNotExistsFunction<LifNotExists(L that) {
         return new IfNotExistsFunction<L>(thisthat);
     }
 
     public IfNotExistsFunction<LifNotExists(Object... defaultValues) {
         return new IfNotExistsFunction<L>(thisnew LiteralOperand(
                 Arrays.asList(defaultValues)));
     }

    
Returns an ListAppend for building expression that involves a list_append(operand, operand) function for the purpose of adding the specified values to the current list attribute.

Parameters:
values the specified values to be added to the current list attribute.
 
     public ListAppendFunction listAppend(Object... values) {
         return new ListAppendFunction(thisnew LiteralOperand(
                 Arrays.asList(values)));
     }

    
Returns an ListAppend for building expression that involves a list_append(operand, operand) function for the purpose of adding the specified list of values to that of the current list attribute.

Parameters:
values the specified list of values to be added to the current list attribute.
    public ListAppendFunction listAppend(List<?> values) {
        return new ListAppendFunction(thisnew LiteralOperand(values));
    }

    
Returns an ListAppend for building expression that involves a list_append(operand, operand) function for the purpose of adding the values of the specified list attribute to the current list attribute.

Parameters:
that the specified list attribute whose values will be added to the current list attribute.
    public ListAppendFunction listAppend(L that) {
        return new ListAppendFunction(thisthat);
    }

    
Returns a SetAction object used for building update expression. If the attribute referred to by this path operand doesn't exist, the returned object represents adding the attribute value of the specified source path operand to an item. If the current attribute already exists, the returned object represents the value replacement of the current attribute by the attribute value of the specified source path operand.
    public SetAction set(L source) {
        return new SetAction(thissource);
    }

    
Returns a SetAction object used for building update expression. If the attribute referred to by this path operand doesn't exist, the returned object represents adding the specified value as an attribute to an item. If the attribute referred to by this path operand already exists, the returned object represents the value replacement of the current attribute by the specified value.
    public SetAction set(List<?> value) {
        return new SetAction(thisnew LiteralOperand(value));
    }

    
Returns a SetAction object used for building update expression. If the attribute referred to by this path operand doesn't exist, the returned object represents adding the value of evaluating the specified IfNotExists function as an attribute to an item. If the attribute referred to by this path operand already exists, the returned object represents the value replacement of the current attribute by the value of evaluating the specified IfNotExists function.
    public SetAction set(IfNotExistsFunction<LifNotExistsFunction) {
        return new SetAction(thisifNotExistsFunction);
    }

    
Returns a comparator condition (that evaluates to true if the attribute value referred to by this path operand is equal to the specified value) for building condition expression.
    public ComparatorCondition eq(List<?> value) {
        return new ComparatorCondition("="thisnew LiteralOperand(value));
    }

    
Returns a comparator condition (that evaluates to true if the attribute value referred to by this path operand is not equal to that of the specified path operand) for building condition expression.
    public ComparatorCondition ne(List<?> value) {
        return new ComparatorCondition("<>"thisnew LiteralOperand(value));
    }

    
Returns an IfNotExists object which represents an if_not_exists(path, operand) function call where path refers to that of the current path operand; used for building expressions.
 "if_not_exists (path, operand) ??? If the item does not contain an attribute 
 at the specified path, then if_not_exists evaluates to operand; otherwise, 
 it evaluates to path. You can use this function to avoid overwriting an 
 attribute already present in the item."
 

Parameters:
defaultValue the default value that will be used as the operand to the if_not_exists function call.
    public IfNotExistsFunction<LifNotExists(List<?> defaultValue) {
        return new IfNotExistsFunction<L>(thisnew LiteralOperand(defaultValue));
    }
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