org.geotools.brewer.styling.filter.expression

Class ExpressionBuilder

Object

ExpressionBuilder

All Implemented Interfaces:

Builder<Expression>

Direct Known Subclasses:

ChildExpressionBuilder

public class ExpressionBuilder
extends Object
implements Builder<Expression>

ExpressionBuilder acting as a simple wrapper around an Expression.

Field Summary

Fields

Modifier and Type	Field and Description
protected Builder<? extends Expression>	delegate
protected FilterFactory	ff
protected boolean	unset

Constructor Summary

Constructors

Constructor and Description
ExpressionBuilder()
ExpressionBuilder(Expression expr)

Method Summary

Modifier and Type	Method and Description
AddBuilder	add()
Expression	build() Build the expression.
DivideBuilder	divide()
FunctionBuilder	function()
FunctionBuilder	function(String name)
boolean	isUnset()
LiteralBuilder	literal() Define expression as a literal.
Builder<?>	literal(Object literal)
MultiplyBuilder	multiply()
PropertyNameBuilder	property()
Builder<?>	property(String xpath)
ExpressionBuilder	reset() Configure the Builder to produce a default result.
ExpressionBuilder	reset(Expression original) Configure the Builder to produce a copy of the provided original.
SubtractBuilder	subtract()
ExpressionBuilder	unset() Configure the Builder to produce null.

Methods inherited from class Object

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

Field Detail

ff

protected FilterFactory ff

unset

protected boolean unset

delegate

protected Builder<? extends Expression> delegate

Constructor Detail

ExpressionBuilder

public ExpressionBuilder()

ExpressionBuilder

public ExpressionBuilder(Expression expr)

Method Detail

literal

public LiteralBuilder literal()

Define expression as a literal.

Example:b.literal().value( 1 );

literal

public Builder<?> literal(Object literal)

add

public AddBuilder add()

multiply

public MultiplyBuilder multiply()

divide

public DivideBuilder divide()

subtract

public SubtractBuilder subtract()

property

public PropertyNameBuilder property()

property

public Builder<?> property(String xpath)

function

public FunctionBuilder function()

function

public FunctionBuilder function(String name)

build

public Expression build()

Build the expression.

Specified by:

build in interface Builder<Expression>

Returns:

Created object may be null if unset()

reset

public ExpressionBuilder reset()

Description copied from interface: Builder

Configure the Builder to produce a default result.

Specified by:

reset in interface Builder<Expression>

Returns:

Builder configured to produce a default result.

reset

public ExpressionBuilder reset(Expression original)

Description copied from interface: Builder

Configure the Builder to produce a copy of the provided original.

Specified by:

reset in interface Builder<Expression>

Parameters:

original - Original, if null this will behave the same as unset()

Returns:

Builder configured to produce the provided original

unset

public ExpressionBuilder unset()

Description copied from interface: Builder

Configure the Builder to produce null.

This method allows a Builder to be used as a placeholder; in its unset state the build() method will produce null. If any of the builder methods are used the builder will produce a result.

Specified by:

unset in interface Builder<Expression>

Returns:

Builder configured to build null

isUnset

public boolean isUnset()