org.apache.openjpa.kernel.exps
Class Lit

java.lang.Object
  org.apache.openjpa.kernel.exps.Val
      org.apache.openjpa.kernel.exps.Lit

All Implemented Interfaces:

Serializable, Constant, Literal, Value

 class Lit
extends Val
implements Literal

Represents a literal.

Author:

Abe White

Field Summary

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

Constructor Summary

Lit(Object val, int ptype)
Constructor.

Method Summary

protected Object	eval(Object candidate, Object orig, StoreContext ctx, Object[] params) Return this value for the given candidate.
int	getParseType() The type the literal was parsed as.
Class	getType() Return the expected type for this value, or Object if the type is unknown.
Object	getValue() The value of this literal.
Object	getValue(Object[] parameters) Return the value for this constant given the specified parameters.
void	setImplicitType(Class type) Set the implicit type of the value, based on how it is used in the filter.
void	setValue(Object val) The value of this literal.

Methods inherited from class org.apache.openjpa.kernel.exps.Val

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

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

Lit

public Lit(Object val,
           int ptype)

Constructor. Provide constant value.

Method Detail

getValue

public Object getValue()

Description copied from interface: Literal

The value of this literal.

Specified by:

getValue in interface Literal

setValue

public void setValue(Object val)

Description copied from interface: Literal

The value of this literal.

Specified by:

setValue in interface Literal

getParseType

public int getParseType()

Description copied from interface: Literal

The type the literal was parsed as.

Specified by:

getParseType in interface Literal

getValue

public Object getValue(Object[] parameters)

Description copied from interface: Constant

Return the value for this constant given the specified parameters.

Specified by:

getValue in interface Constant

getType

public Class getType()

Description copied from interface: Value

Return the expected type for this value, or Object if the type is unknown.

Specified by:

getType in interface Value

setImplicitType

public void setImplicitType(Class type)

Description copied from interface: Value

Set the implicit type of the value, based on how it is used in the filter. This method is only called on values who return Object from Value.getType().

Specified by:

setImplicitType in interface Value

eval

protected Object eval(Object candidate,
                      Object orig,
                      StoreContext ctx,
                      Object[] params)

Description copied from class: Val

Return this value for the given candidate.

Specified by:

eval in class Val