org.apache.openjpa.kernel.exps
Class QueryExpressions

java.lang.Object
  extended by 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.



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