Module org.eclipse.persistence.jpa

Package org.eclipse.persistence.internal.jpa.querydef

Class ParameterExpressionImpl<T>

java.lang.Object

org.eclipse.persistence.internal.jpa.querydef.SelectionImpl<T>

org.eclipse.persistence.internal.jpa.querydef.ExpressionImpl<T>

org.eclipse.persistence.internal.jpa.querydef.ParameterExpressionImpl<T>

All Implemented Interfaces:

Expression<T>, ParameterExpression<T>, Selection<T>, Parameter<T>, TupleElement<T>, Serializable, InternalExpression, InternalSelection

public class ParameterExpressionImpl<T>
extends ExpressionImpl<T>
implements ParameterExpression<T>

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected String	internalName
protected String	name
protected Integer	position

Fields inherited from class org.eclipse.persistence.internal.jpa.querydef.ExpressionImpl

isLiteral, literal, metamodel

Fields inherited from class org.eclipse.persistence.internal.jpa.querydef.SelectionImpl

alias, currentNode, javaType

Constructor Summary

Constructors

Constructor	Description
ParameterExpressionImpl(Metamodel metamodel, Class<T> javaType)
ParameterExpressionImpl(Metamodel metamodel, Class<T> javaType, Integer position)
ParameterExpressionImpl(Metamodel metamodel, Class<T> javaType, String name)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object obj)
void	findRootAndParameters(CommonAbstractCriteriaImpl query)
String	getInternalName()	Returns the name used by EclipseLink when a name has not been assigned by the user.
String	getName()	Return the parameter name, or null if the parameter is not a named parameter.
Class<T>	getParameterType()	Return the Java type of the parameter.
Integer	getPosition()	Return the parameter position, or null if the parameter is not a positional parameter.
int	hashCode()
boolean	isParameter()
String	toString()

Methods inherited from class org.eclipse.persistence.internal.jpa.querydef.ExpressionImpl

as, buildExpressionForAs, in, in, in, in, isCompoundExpression, isExpression, isJunction, isLiteral, isNotNull, isNull, isPredicate, isSubquery

Methods inherited from class org.eclipse.persistence.internal.jpa.querydef.SelectionImpl

alias, getAlias, getCompoundSelectionItems, getCurrentNode, getJavaType, isCompoundSelection, isConstructor, isFrom, isRoot, setJavaType

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface jakarta.persistence.criteria.Expression

as, in, in, in, in, isNotNull, isNull

Methods inherited from interface jakarta.persistence.criteria.Selection

alias, getCompoundSelectionItems, isCompoundSelection

Methods inherited from interface jakarta.persistence.TupleElement

getAlias, getJavaType

Field Details

name

protected String name

internalName

protected String internalName

position

protected Integer position

Constructor Details

ParameterExpressionImpl

public ParameterExpressionImpl(Metamodel metamodel,
 Class<T> javaType,
 String name)

ParameterExpressionImpl

public ParameterExpressionImpl(Metamodel metamodel,
 Class<T> javaType)

ParameterExpressionImpl

public ParameterExpressionImpl(Metamodel metamodel,
 Class<T> javaType,
 Integer position)

Method Details

findRootAndParameters

public void findRootAndParameters(CommonAbstractCriteriaImpl query)

Specified by:

findRootAndParameters in interface InternalSelection

Overrides:

findRootAndParameters in class ExpressionImpl<T>

getName

public String getName()

Return the parameter name, or null if the parameter is not a named parameter.

Specified by:

getName in interface Parameter<T>

Returns:

parameter name

getInternalName

public String getInternalName()

Returns the name used by EclipseLink when a name has not been assigned by the user.

getPosition

public Integer getPosition()

Return the parameter position, or null if the parameter is not a positional parameter.

Specified by:

getPosition in interface Parameter<T>

Returns:

position of parameter

getParameterType

public Class<T> getParameterType()

Return the Java type of the parameter. Values bound to the parameter must be assignable to this type. This method is required to be supported for criteria queries only. Applications that use this method for Java Persistence query language queries and native queries will not be portable.

Specified by:

getParameterType in interface Parameter<T>

Returns:

the Java type of the parameter

Throws:

IllegalStateException - if invoked on a parameter obtained from a Java persistence query language query or native query when the implementation does not support this use.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

isParameter

public boolean isParameter()

Specified by:

isParameter in interface InternalExpression

Overrides:

isParameter in class ExpressionImpl<T>

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object