org.apache.jackrabbit.spi.commons.query

Class PropertyFunctionQueryNode

java.lang.Object

org.apache.jackrabbit.spi.commons.query.QueryNode

org.apache.jackrabbit.spi.commons.query.PropertyFunctionQueryNode

public class PropertyFunctionQueryNode
extends QueryNode

PropertyFunctionQueryNode allows to place function calls on properties in a query. Supported function names are:

• upper-case as specified in fn:upper-case()
• lower-case as specified in fn:lower-case()

Field Summary

Fields

Modifier and Type	Field and Description
static String	LOWER_CASE Requests that property values in a RelationQueryNode are converted to lower case before they are matched with the literal.
static String	UPPER_CASE Requests that property values in a RelationQueryNode are converted to upper case before they are matched with the literal.

Fields inherited from class org.apache.jackrabbit.spi.commons.query.QueryNode

TYPE_AND, TYPE_DEREF, TYPE_EXACT, TYPE_LOCATION, TYPE_NODETYPE, TYPE_NOT, TYPE_OR, TYPE_ORDER, TYPE_PATH, TYPE_PROP_FUNCTION, TYPE_RELATION, TYPE_ROOT, TYPE_TEXTSEARCH

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PropertyFunctionQueryNode(QueryNode parent, String functionName) Creates a property function query node.

Method Summary

Methods

Modifier and Type	Method and Description
Object	accept(QueryNodeVisitor visitor, Object data) Accepts a QueryNodeVisitor and calls the appropriate visit method on the visitor depending on the concrete implementation of this QueryNode.
boolean	equals(Object obj) Returns true if obj is the same type of QueryNode as this node and is equal to this node.
String	getFunctionName()
int	getType() Returns the type of this node.
boolean	needsSystemTree() Returns true if this query node needs items under /jcr:system to be queried.

Methods inherited from class org.apache.jackrabbit.spi.commons.query.QueryNode

dump, getParent

Methods inherited from class java.lang.Object

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

Field Detail

UPPER_CASE

public static final String UPPER_CASE

Requests that property values in a RelationQueryNode are converted to upper case before they are matched with the literal.

See Also:

Constant Field Values

LOWER_CASE

public static final String LOWER_CASE

Requests that property values in a RelationQueryNode are converted to lower case before they are matched with the literal.

See Also:

Constant Field Values

Constructor Detail

PropertyFunctionQueryNode

protected PropertyFunctionQueryNode(QueryNode parent,
                         String functionName)
                             throws IllegalArgumentException

Creates a property function query node. This query node describes a function which is applied to a property parameter of the parent query node.

Parameters:

parent - the query node where this function is applied to.

functionName - the name of the function which is applied to parent.

Throws:

IllegalArgumentException - if functionName is not a supported function.

Method Detail

accept

public Object accept(QueryNodeVisitor visitor,
            Object data)
              throws javax.jcr.RepositoryException

Accepts a QueryNodeVisitor and calls the appropriate visit method on the visitor depending on the concrete implementation of this QueryNode.

Specified by:

accept in class QueryNode

Parameters:

visitor - the visitor to call back.

data - arbitrary data for the visitor.

Returns:

the return value of the visitor.visit() call.

Throws:

javax.jcr.RepositoryException

getType

public int getType()

Returns the type of this node.

Specified by:

getType in class QueryNode

Returns:

the type of this node.

equals

public boolean equals(Object obj)

Returns true if obj is the same type of QueryNode as this node and is equal to this node.

Specified by:

equals in class QueryNode

Parameters:

obj - the reference object with which to compare.

Returns:

true if obj is equal to this; false otherwise.

getFunctionName

public String getFunctionName()

Returns:

the name of this function.

needsSystemTree

public boolean needsSystemTree()

Returns true if this query node needs items under /jcr:system to be queried.

Specified by:

needsSystemTree in class QueryNode

Returns:

true if this query node needs content under /jcr:system to be queried; false otherwise.