org.apache.xalan.lib
Class ExsltSets
java.lang.Object
|
+--org.apache.xalan.lib.ExsltSets
- public class ExsltSets
- extends java.lang.Object
This class contains EXSLT set extension
functions. It is accessed by specifying a namespace URI as follows:
xmlns:set="http://exslt.org/sets"
The documentation for each function has been copied from the relevant
EXSLT Implementer page.
- See Also:
- EXSLT
Method Summary |
static NodeSet |
difference(NodeIterator ni1,
NodeIterator ni2)
The
set:difference function returns the difference between two node sets -
those nodes that are in the node set passed as the first argument that are
not in the node set passed as the second argument. |
static NodeSet |
distinct(ExpressionContext myContext,
NodeIterator ni)
The
set:distinct function returns a subset of the nodes contained in the
node-set NS passed as the first argument. |
static boolean |
hasSameNode(NodeIterator ni1,
NodeIterator ni2)
The
set:has-same-node function returns true if the node set passed as the
first argument shares any nodes with the node set passed as the second
argument. |
static NodeSet |
intersection(NodeIterator ni1,
NodeIterator ni2)
The
set:intersection function returns a node set comprising the nodes that are
within both the node sets passed as arguments to it. |
static NodeSet |
leading(NodeIterator ni1,
NodeIterator ni2)
The
set:leading function returns the nodes in the node set passed as the first
argument that precede, in document order, the first node in the node set
passed as the second argument. |
static NodeSet |
trailing(NodeIterator ni1,
NodeIterator ni2)
The
set:trailing function returns the nodes in the node set passed as the
first argument that follow, in document order, the first node in the node
set passed as the second argument. |
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait,
wait, wait |
ExsltSets
public ExsltSets()
leading
public static NodeSet leading(NodeIterator ni1,
NodeIterator ni2)
- The set:leading function returns the nodes in the node set passed as the
first argument that precede, in document order, the first node in the node set
passed as the second argument. If the first node in the second node set is not
contained in the first node set, then an empty node set is returned. If the
second node set is empty, then the first node set is returned.
-
- Parameters:
ni1
- NodeIterator for first node-set.
ni2
- NodeIterator for second node-set.
- Returns:
- a node-set containing the nodes in ni1 that precede in document order
the first node in ni2; an empty node-set if the first node in ni2 is not in
ni1; all of ni1 if n12 is empty.
- See Also:
- EXSLT
trailing
public static NodeSet trailing(NodeIterator ni1,
NodeIterator ni2)
- The set:trailing function returns the nodes in the node set passed as the
first argument that follow, in document order, the first node in the node set
passed as the second argument. If the first node in the second node set is not
contained in the first node set, then an empty node set is returned. If the
second node set is empty, then the first node set is returned.
-
- Parameters:
ni1
- NodeIterator for first node-set.
ni2
- NodeIterator for second node-set.
- Returns:
- a node-set containing the nodes in ni1 that follow in document order the
first node in ni2; an empty node-set if the first node in ni2 is not in ni1;
all of ni1 if ni2 is empty.
- See Also:
- EXSLT
intersection
public static NodeSet intersection(NodeIterator ni1,
NodeIterator ni2)
throws TransformerException
- The set:intersection function returns a node set comprising the nodes that
are within both the node sets passed as arguments to it.
-
- Parameters:
ni1
- NodeIterator for first node-set.
ni2
- NodeIterator for second node-set.
- Returns:
- a NodeSet containing the nodes in ni1 that are also in ni2. Note:
Already implemented in the xalan namespace.
- See Also:
- EXSLT
difference
public static NodeSet difference(NodeIterator ni1,
NodeIterator ni2)
throws TransformerException
- The set:difference function returns the difference between two node sets -
those nodes that are in the node set passed as the first argument that are not
in the node set passed as the second argument.
-
- Parameters:
ni1
- NodeIterator for first node-set.
ni2
- NodeIterator for second node-set.
- Returns:
- a NodeSet containing the nodes in ni1 that are not in ni2. Note: Already
implemented in the xalan namespace.
- See Also:
- EXSLT
distinct
public static NodeSet distinct(ExpressionContext myContext,
NodeIterator ni)
throws TransformerException
- The set:distinct function returns a subset of the nodes contained in the
node-set NS passed as the first argument. Specifically, it selects a node N if
there is no node in NS that has the same string value as N, and that precedes
N in document order.
-
- Parameters:
myContext
- Passed in by Xalan extension processor.
ni
- NodeIterator for node-set.
- Returns:
- a NodeSet with nodes from ni containing distinct string values. In other
words, if more than one node in ni contains the same string value, only
include the first such node found. Note: Already implemented in the xalan
namespace.
- See Also:
- EXSLT
hasSameNode
public static boolean hasSameNode(NodeIterator ni1,
NodeIterator ni2)
- The set:has-same-node function returns true if the node set passed as the
first argument shares any nodes with the node set passed as the second
argument. If there are no nodes that are in both node sets, then it returns
false. The Xalan extensions MethodResolver converts 'has-same-node' to
'hasSameNode'. Note: Not to be confused with hasSameNodes in the Xalan
namespace, which returns true if the two node sets contain the exactly the
same nodes (perhaps in a different order), otherwise false.
-
- See Also:
- EXSLT
Copyright © 2002 Apache XML Project. All Rights Reserved.