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
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

Constructor Detail

QueryExpressions

public QueryExpressions()

Method Detail

setContexts

public void setContexts(Stack<Context> contexts)

Set reference to the JPQL query contexts.

Parameters:

contexts -

ctx

public Context ctx()

Returns the current JPQL query context.

Returns:

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.