Expression (Groovy Documentation)

Summary:
Field
Property
Constructor
Method

geoscript.filter.Expression

```
class Expression
extends java.lang.Object
```
A base class for all Expressions.
You can create a literal Expression by passing a value:
```
 Expression e = new Expression(12)
 
```
Authors:
Jared Erickson

Field Summary

Fields
Modifiers	Name	Description
`protected static FilterFactory`	`filterFactory`	The GeoTools FilterFactory

Properties Summary

Properties
Type	Name and description
`Expression`	`expr` The wrapped GeoTools Expression

Constructor Summary

Constructors
Constructor and description
`Expression(Expression e)` Create a new Expression from a GeoTools Expression
`Expression(Expression e)` Create a new Expression from an existing Expression
`Expression(java.lang.Object value)` Create a new Expression from a value

Methods Summary

Methods
Type Params	Return Type	Name and description
	`java.lang.Object`	`evaluate(java.lang.Object obj)` Evaluate the Filter against an Object (commonly a Feature)
	`static Expression`	`fromCQL(java.lang.String cql)` Create a new Expression from a CQL statement
	`java.lang.Object`	`getValue()` Get the underlying value of the Expression
	`java.lang.String`	`toString()` The String representation

Inherited Methods Summary

Inherited Methods
Methods inherited from class	Name
`class java.lang.Object`	`java.lang.Object#wait(long), java.lang.Object#wait(long, int), java.lang.Object#wait(), java.lang.Object#equals(java.lang.Object), java.lang.Object#toString(), java.lang.Object#hashCode(), java.lang.Object#getClass(), java.lang.Object#notify(), java.lang.Object#notifyAll()`

- Field Detail
  - protected static FilterFactory filterFactory
    
    The GeoTools FilterFactory
- Property Detail
  - Expression expr
    
    The wrapped GeoTools Expression
- Constructor Detail
  - Expression(Expression e)
    
    Create a new Expression from a GeoTools Expression
    Parameters:
    e - The GeoTools Expression
  - Expression(Expression e)
    
    Create a new Expression from an existing Expression
    Parameters:
    e - The existing Expression
  - Expression(java.lang.Object value)
    
    Create a new Expression from a value
    Parameters:
    value - The value
- Method Detail
  - java.lang.Object evaluate(java.lang.Object obj)
    
    Evaluate the Filter against an Object (commonly a Feature)
    Parameters:
    obj - Some Object
    Returns:
    A value
  - static Expression fromCQL(java.lang.String cql)
    
    Create a new Expression from a CQL statement
    Parameters:
    cql - The CQL statement
    Returns:
    An Expression
  - java.lang.Object getValue()
    
    Get the underlying value of the Expression
    Returns:
    The value
  - java.lang.String toString()
    
    The String representation
    Returns:
    The String representation

Summary:
Field
Property
Constructor
Method

Groovy Documentation