com.amazonaws.mobileconnectors.dynamodbv2.document

Class Expression

java.lang.Object

com.amazonaws.mobileconnectors.dynamodbv2.document.Expression

public class Expression
extends Object

Expressions are used for conditional deletes and filtering for query and scan operations.

Constructor Summary

Constructors

Constructor and Description
Expression()

Method Summary

Modifier and Type	Method and Description
void	addExpressionAttributeNames(String key, String value) Adds expression attributes.
void	addExpressionAttributeValues(String key, DynamoDBEntry value) Adds expression attribute values.
protected void	applyExpression(DeleteItemRequest request, Table table)
protected void	applyExpression(PutItemRequest request, Table table)
protected static void	applyExpression(QueryRequest request, Table table, Expression keyExpression, Expression filterExpression)
protected void	applyExpression(ScanRequest request, Table table)
protected void	applyExpression(UpdateItemRequest request, Table table)
protected static Map<String,AttributeValue>	convertToAttributeValues(Map<String,DynamoDBEntry> valueMap, Table table)
String	getExpressionStatement()
protected boolean	isSet()
void	setExpressionStatement(String expressionStatement)
Expression	withExpressionAttibuteNames(String key, String value) Adds expression attributes.
Expression	withExpressionAttibuteValues(String key, DynamoDBEntry value) Adds expression attribute values.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Expression

public Expression()

Method Detail

isSet

protected boolean isSet()

addExpressionAttributeNames

public void addExpressionAttributeNames(String key,
                                        String value)

Adds expression attributes.

Parameters:

key - the attribute name.

value - the atttribute value.

withExpressionAttibuteNames

public Expression withExpressionAttibuteNames(String key,
                                              String value)

Adds expression attributes.

Parameters:

key - the attribute name.

value - the atttribute value.

Returns:

Expression.

addExpressionAttributeValues

public void addExpressionAttributeValues(String key,
                                         DynamoDBEntry value)

Adds expression attribute values.

Parameters:

key - the expression attribute name.

value - the expression attribute value.

withExpressionAttibuteValues

public Expression withExpressionAttibuteValues(String key,
                                               DynamoDBEntry value)

Adds expression attribute values.

Parameters:

key - the expression attribute name.

value - the expression attribute value.

Returns:

Expression.

applyExpression

protected void applyExpression(ScanRequest request,
                               Table table)

applyExpression

protected void applyExpression(DeleteItemRequest request,
                               Table table)

applyExpression

protected void applyExpression(PutItemRequest request,
                               Table table)

applyExpression

protected void applyExpression(UpdateItemRequest request,
                               Table table)

applyExpression

protected static void applyExpression(QueryRequest request,
                                      Table table,
                                      Expression keyExpression,
                                      Expression filterExpression)

convertToAttributeValues

protected static Map<String,AttributeValue> convertToAttributeValues(Map<String,DynamoDBEntry> valueMap,
                                                                     Table table)

getExpressionStatement

public String getExpressionStatement()

setExpressionStatement

public void setExpressionStatement(String expressionStatement)