org.geotools.data
Class AttributeQuery

java.lang.Object
  org.geotools.data.AttributeQuery

public class AttributeQuery

extends java.lang.Object

Provide a defined of derived AttribtueType during a Query (immutable).

In practive this works as an "As" statement in SQL. This class is inmutable.

Since:

0.6.0

Author:

jgarnett

Field Summary

Expression	expr The expression used to obtain the value
AttributeType	type The attribtueType of that this AttributeQuery produces

Constructor Summary

AttributeQuery(AttributeType type, Expression expression)
Construct AttributeQuery.

AttributeQuery(FeatureType schema, java.lang.String attributeName)
Construct AttributeQuery, basically a no-op that just copies attributeType across.

Methods inherited from class java.lang.Object

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

Field Detail

type

public final AttributeType type

The attribtueType of that this AttributeQuery produces

expr

public final Expression expr

The expression used to obtain the value

Constructor Detail

AttributeQuery

public AttributeQuery(FeatureType schema,
                      java.lang.String attributeName)
               throws IllegalFilterException

Construct AttributeQuery, basically a no-op that just copies attributeType across.

Parameters:

schema - Schema to query against

attributeName - Simple attribute name, unsure if xpath is allowed

Throws:

IllegalFilterException

AttributeQuery

public AttributeQuery(AttributeType type,
                      Expression expression)

Construct AttributeQuery.

You can use this for generic mapping from an expression to an attributeType.

Parameters:

expression -