org.apache.openjpa.kernel.exps
Class QueryExpressions

java.lang.Object
  org.apache.openjpa.kernel.exps.QueryExpressions

All Implemented Interfaces:

Serializable

public class QueryExpressions
extends Object
implements Serializable

Struct to hold the state of a parsed expression query.

Since:

0.3.2

Author:

Abe White

See Also:

Serialized Form

Field Summary

ClassMetaData[]	accessPath
String	alias
boolean[]	ascending
int	distinct
static int	DISTINCT_AUTO
static int	DISTINCT_FALSE
static int	DISTINCT_TRUE
static Value[]	EMPTY_VALUES
String[]	fetchInnerPaths
String[]	fetchPaths
Expression	filter
Value[]	grouping
String[]	groupingClauses
boolean	hasInExpression
Expression	having
int	operation
Value[]	ordering
String[]	orderingAliases
String[]	orderingClauses
OrderedMap<Object,Class<?>>	parameterTypes
String[]	projectionAliases
String[]	projectionClauses
Value[]	projections
Value[]	range
Class<?>	resultClass
ResultShape<?>	shape
Object	state
Map<Path,Value>	updates Map of FieldMetaData,Value for update statements.

Constructor Summary

QueryExpressions()

Method Summary

Context	ctx() Returns the current JPQL query context.
List<FieldMetaData>	getParameterizedFields() Gets the fields that are bound to parameters.
boolean	isAggregate() Whether this is an aggregate results.
boolean	isDistinct()
void	putUpdate(Path path, Value val) Add an update.
void	setContexts(Stack<Context> contexts) Set reference to the JPQL query contexts.

Methods inherited from class java.lang.Object

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

Field Detail

DISTINCT_AUTO

public static final int DISTINCT_AUTO

See Also:

Constant Field Values

DISTINCT_TRUE

public static final int DISTINCT_TRUE

See Also:

Constant Field Values

DISTINCT_FALSE

public static final int DISTINCT_FALSE

See Also:

Constant Field Values

EMPTY_VALUES

public static final Value[] EMPTY_VALUES

updates

public Map<Path,Value> updates

Map of FieldMetaData,Value for update statements.

distinct

public int distinct

alias

public String alias

projections

public Value[] projections

projectionClauses

public String[] projectionClauses

projectionAliases

public String[] projectionAliases

resultClass

public Class<?> resultClass

filter

public Expression filter

grouping

public Value[] grouping

groupingClauses

public String[] groupingClauses

having

public Expression having

ordering

public Value[] ordering

ascending

public boolean[] ascending

orderingClauses

public String[] orderingClauses

orderingAliases

public String[] orderingAliases

parameterTypes

public OrderedMap<Object,Class<?>> parameterTypes

operation

public int operation

accessPath

public ClassMetaData[] accessPath

fetchPaths

public String[] fetchPaths

fetchInnerPaths

public String[] fetchInnerPaths

range

public Value[] range

state

public Object state

shape

public ResultShape<?> shape

hasInExpression

public boolean hasInExpression

Constructor Detail

QueryExpressions

public QueryExpressions()

Method Detail

setContexts

public void setContexts(Stack<Context> contexts)

Set reference to the JPQL query contexts.

ctx

public Context ctx()

Returns the current JPQL query context.

isAggregate

public boolean isAggregate()

Whether this is an aggregate results.

isDistinct

public boolean isDistinct()

getParameterizedFields

public List<FieldMetaData> getParameterizedFields()

Gets the fields that are bound to parameters.

Returns:

empty if the query has no filtering condition or no parameters.

putUpdate

public void putUpdate(Path path,
                      Value val)

Add an update.