org.teiid.language
Class Literal

java.lang.Object
  org.teiid.language.BaseLanguageObject
      org.teiid.language.Literal

All Implemented Interfaces:

Expression, LanguageObject

public class Literal
extends BaseLanguageObject
implements Expression

Represents a literal value that is used in an expression. The value can be obtained and should match the type specified by getType()

Constructor Summary

Literal(java.lang.Object value, java.lang.Class<?> type)

Method Summary

void	acceptVisitor(LanguageObjectVisitor visitor)
java.lang.Class<?>	getType() Determine the type returned by this expression.
java.lang.Object	getValue()
boolean	isBindEligible() Set by the optimizer if the literal was created by the evaluation of another expression.
boolean	isBindValue()
boolean	isMultiValued()
void	setBindEligible(boolean isBindEligible)
void	setBindValue(boolean bindValue)
void	setMultiValued(boolean multiValued)
void	setType(java.lang.Class<?> type)
void	setValue(java.lang.Object value)

Methods inherited from class org.teiid.language.BaseLanguageObject

toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Literal

public Literal(java.lang.Object value,
               java.lang.Class<?> type)

Method Detail

getValue

public java.lang.Object getValue()

acceptVisitor

public void acceptVisitor(LanguageObjectVisitor visitor)

Specified by:

acceptVisitor in interface LanguageObject

getType

public java.lang.Class<?> getType()

Description copied from interface: Expression

Determine the type returned by this expression.

Specified by:

getType in interface Expression

Returns:

The type, as defined by a Java class

setValue

public void setValue(java.lang.Object value)

isBindValue

public boolean isBindValue()

setBindValue

public void setBindValue(boolean bindValue)

isMultiValued

public boolean isMultiValued()

setMultiValued

public void setMultiValued(boolean multiValued)

setType

public void setType(java.lang.Class<?> type)

isBindEligible

public boolean isBindEligible()

Set by the optimizer if the literal was created by the evaluation of another expression. Setting to true will not always result in the value being handled as a bind value. That can be forced isBindValue()

Returns:

setBindEligible

public void setBindEligible(boolean isBindEligible)