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

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

All Implemented Interfaces:

Serializable, Val, Constant, Literal, Value

public class TypeLit
extends Const
implements Literal

A type literal value.

Author:

Catalina Wei

See Also:

Serialized Form

Nested Class Summary

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.kernel.exps.Literal

TYPE_BOOLEAN, TYPE_CLASS, TYPE_COLLECTION, TYPE_DATE, TYPE_ENUM, TYPE_NUMBER, TYPE_SQ_STRING, TYPE_STRING, TYPE_TIME, TYPE_TIMESTAMP, TYPE_UNKNOWN

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

TypeLit(Object val, int ptype)
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.
int	getParseType()
Class	getType()
Object	getValue()
Object	getValue(Object[] params)
ExpState	initialize(Select sel, ExpContext ctx, int flags) Initialize the value.
void	setImplicitType(Class type)
void	setValue(Object val)

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

appendIsEmpty, appendIsNotEmpty, appendIsNotNull, appendIsNull, appendSize, getMetaData, getSQLValue, getValue, 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

clone, 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

TypeLit

public TypeLit(Object val,
               int ptype)

Constructor. Supply literal value.

Method Detail

getType

public Class getType()

Specified by:

getType in interface Value

setImplicitType

public void setImplicitType(Class type)

Specified by:

setImplicitType in interface Value

getParseType

public int getParseType()

Specified by:

getParseType in interface Literal

getValue

public Object getValue()

Specified by:

getValue in interface Literal

setValue

public void setValue(Object val)

Specified by:

setValue in interface Literal

getValue

public Object getValue(Object[] params)

Specified by:

getValue in interface Constant

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