org.geotools.filter.expression
Interface LiteralExpression

All Superinterfaces:

org.opengis.filter.expression.Expression, Expression, ExpressionType, org.opengis.filter.expression.Literal

All Known Subinterfaces:

BBoxExpression

All Known Implementing Classes:

BBoxExpressionImpl, ConstantExpression, LiteralExpressionImpl

public interface LiteralExpression

extends Expression, org.opengis.filter.expression.Literal

Defines an expression that holds a literal for return.

Version:

$Id: LiteralExpression.java 18021 2006-02-14 20:36:18Z jdeolive $

Author:

Rob Hranac, Vision for New York, Chris Holmes, TOPP

Field Summary

Fields inherited from interface org.geotools.filter.expression.ExpressionType

ATTRIBUTE, ATTRIBUTE_DOUBLE, ATTRIBUTE_GEOMETRY, ATTRIBUTE_INTEGER, ATTRIBUTE_STRING, ATTRIBUTE_UNDECLARED, FUNCTION, LITERAL_DOUBLE, LITERAL_GEOMETRY, LITERAL_INTEGER, LITERAL_STRING, MATH_ADD, MATH_DIVIDE, MATH_MULTIPLY, MATH_SUBTRACT

Method Summary

java.lang.Object	getLiteral() Deprecated. use Literal.getValue().
short	getType() Returns the literal type.
java.lang.Object	getValue(Feature feature) Deprecated. use Expression.evaluate(Feature).
void	setLiteral(java.lang.Object literal) Deprecated. use Literal.setValue(Object)

Methods inherited from interface org.geotools.filter.expression.Expression

accept, evaluate

Methods inherited from interface org.opengis.filter.expression.Expression

accept, evaluate

Methods inherited from interface org.opengis.filter.expression.Literal

getValue, setValue

Method Detail

setLiteral

public void setLiteral(java.lang.Object literal)
                throws IllegalFilterException

Deprecated. use Literal.setValue(Object)

Sets the literal.

Parameters:

literal - The literal to store inside this expression.

Throws:

IllegalFilterException - This literal type is not in scope.

getValue

public java.lang.Object getValue(Feature feature)

Deprecated. use Expression.evaluate(Feature).

Gets the value of this literal.

Specified by:

getValue in interface Expression

Parameters:

feature - Required by the interface but not used.

Returns:

the literal held by this expression. Ignores the passed in feature.

getType

public short getType()

Returns the literal type.

Specified by:

getType in interface Expression

Returns:

the short representation of the literal expression type.

getLiteral

public java.lang.Object getLiteral()

Deprecated. use Literal.getValue().

Retrieves the literal of this expression.

Returns:

the literal held by this expression.