org.apache.openjpa.jdbc.kernel.exps
Class CollectionParam

java.lang.Object
  org.apache.openjpa.jdbc.kernel.exps.AbstractVal
      org.apache.openjpa.jdbc.kernel.exps.Const
          org.apache.openjpa.jdbc.kernel.exps.CollectionParam

All Implemented Interfaces:

Serializable, Val, Constant, Parameter, Value

public class CollectionParam
extends Const
implements Parameter

A collection-valued input parameter in an in-expression.

Author:

Catalina Wei

See Also:

Serialized Form

Nested Class Summary

static class

CollectionParam.ParamExpState Expression state.

Nested classes/interfaces inherited from class org.apache.openjpa.jdbc.kernel.exps.Const

Const.ConstExpState

Field Summary

Fields inherited from class org.apache.openjpa.jdbc.kernel.exps.AbstractVal

FALSE, TRUE

Fields inherited from interface org.apache.openjpa.jdbc.kernel.exps.Val

ABS_VAL, ARGS_VAL, CMP_EQUAL, COALESCE_VAL, CONCAT_VAL, FORCE_OUTER, GENERALCASE_VAL, INDEXOF_VAL, JOIN_REL, LENGTH_VAL, LOCATE_VAL, LOWER_VAL, MATH_VAL, NULL_CMP, NULLIF_VAL, SIMPLECASE_VAL, SQRT_VAL, SUBSTRING_VAL, TRIM_VAL, UPPER_VAL, VAL, WHENCONDITION_VAL, WHENSCALAR_VAL

Constructor Summary

CollectionParam(Object key, Class type)
Constructor.

Method Summary

void	appendTo(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql, int index) Append the indexth SQL element to the given buffer.
void	calculateValue(Select sel, ExpContext ctx, ExpState state, Val other, ExpState otherState) Calculate and cache the SQL for this value.
CollectionParam	clone()
int	getIndex()
Object	getParameterKey()
Object	getSQLValue(Select sel, ExpContext ctx, ExpState state) Return the SQL value of this constant.
Class	getType()
Object	getValue(ExpContext ctx, ExpState state) Return the value of this constant.
Object	getValue(Object[] params)
ExpState	initialize(Select sel, ExpContext ctx, int flags) Initialize the value.
void	setImplicitType(Class type)
void	setIndex(int idx)

Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.Const

appendIsEmpty, appendIsNotEmpty, appendIsNotNull, appendIsNull, appendSize, getMetaData, groupBy, isSQLValueNull, length, load, orderBy, select, selectColumns, setMetaData

Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.AbstractVal

acceptVisit, appendIndex, appendType, getAlias, getId, getName, getPath, getSelectAs, isAggregate, isVariable, isXPath, setAlias, toDataStoreValue

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.openjpa.kernel.exps.Value

acceptVisit, getAlias, getMetaData, getName, getPath, getSelectAs, isAggregate, isVariable, isXPath, setAlias, setMetaData

Constructor Detail

CollectionParam

public CollectionParam(Object key,
                       Class type)

Constructor. Supply parameter name and type.

Method Detail

clone

public CollectionParam clone()

Overrides:

clone in class Object

getParameterKey

public Object getParameterKey()

Specified by:

getParameterKey in interface Parameter

getType

public Class getType()

Specified by:

getType in interface Value

setImplicitType

public void setImplicitType(Class type)

Specified by:

setImplicitType in interface Value

getIndex

public int getIndex()

setIndex

public void setIndex(int idx)

Specified by:

setIndex in interface Parameter

getValue

public Object getValue(Object[] params)

Specified by:

getValue in interface Constant

getValue

public Object getValue(ExpContext ctx,
                       ExpState state)

Description copied from class: Const

Return the value of this constant. May be more robust than the parameters-only form.

Overrides:

getValue in class Const

getSQLValue

public Object getSQLValue(Select sel,
                          ExpContext ctx,
                          ExpState state)

Description copied from class: Const

Return the SQL value of this constant.

Overrides:

getSQLValue in class Const

initialize

public ExpState initialize(Select sel,
                           ExpContext ctx,
                           int flags)

Description copied from interface: Val

Initialize the value. This method should recursively initialize any sub-values.

Specified by:

initialize in interface Val

Overrides:

initialize in class Const

calculateValue

public void calculateValue(Select sel,
                           ExpContext ctx,
                           ExpState state,
                           Val other,
                           ExpState otherState)

Description copied from interface: Val

Calculate and cache the SQL for this value. This method is called before length or any append methods.

Specified by:

calculateValue in interface Val

Overrides:

calculateValue in class Const

other - the value being compared to, or null if not a comparison

appendTo

public void appendTo(Select sel,
                     ExpContext ctx,
                     ExpState state,
                     SQLBuffer sql,
                     int index)

Description copied from interface: Val

Append the indexth SQL element to the given buffer.

Specified by:

appendTo in interface Val