Package net.sf.saxon.pattern
Class CombinedNodeTest
java.lang.Object
net.sf.saxon.pattern.NodeTest
net.sf.saxon.pattern.CombinedNodeTest
- All Implemented Interfaces:
Serializable
,ItemType
A CombinedNodeTest combines two nodetests using one of the operators
union (=or), intersect (=and), difference (= "and not"). This arises
when optimizing a union (etc) of two path expressions using the same axis.
A CombinedNodeTest is also used to support constructs such as element(N,T),
which can be expressed as (element(N,*) AND element(*,T))
- Author:
- Michael H. Kay
- See Also:
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionboolean
Indicates whether some other object is "equal to" this one.Get the item type of the atomic values that will be produced when an item of this type is atomized (assuming that atomization succeeds)NodeTest[]
Get the two parts of the combined node testGet the content type allowed by this NodeTest (that is, the type annotation of the matched nodes).double
get the default priority of this nodeTest when used as a patternint
Get the name of the nodes matched by this nodetest, if it matches a specific name.int
Get a mask indicating which kinds of nodes this NodeTest can match.int
Get the basic kind of object that this ItemType matches: for a NodeTest, this is the kind of node, or Type.Node if it matches different kinds of nodes.Get the set of node names allowed by this NodeTest.Get the supertype of this type.int
hashCode()
Returns a hash code value for the object.boolean
Determine whether the content type (if present) is nillableboolean
matches
(int nodeType, int fingerprint, int annotation) Test whether this node test is satisfied by a given node.boolean
Test whether this node test is satisfied by a given node.boolean
Test whether this node test is satisfied by a given node on a TinyTree.void
setGlobalComponentTest
(boolean global) Indicate whether this CombinedNodeTest actually represents a SequenceType of the form schema-element(X) or schema-attribute(X).Display the type descriptor for diagnosticsMethods inherited from class net.sf.saxon.pattern.NodeTest
getPrimitiveItemType, isAtomicType, matchesItem
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Constructor Details
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CombinedNodeTest
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Method Details
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setGlobalComponentTest
public void setGlobalComponentTest(boolean global) Indicate whether this CombinedNodeTest actually represents a SequenceType of the form schema-element(X) or schema-attribute(X). This information is used only when reconstructing a string representation of the NodeTest for diagnostics. -
matches
public boolean matches(int nodeType, int fingerprint, int annotation) Test whether this node test is satisfied by a given node. -
matches
Test whether this node test is satisfied by a given node on a TinyTree. The node must be a document, element, text, comment, or processing instruction node. This method is provided so that when navigating a TinyTree a node can be rejected without actually instantiating a NodeInfo object. -
matches
Test whether this node test is satisfied by a given node. This alternative method is used in the case of nodes where calculating the fingerprint is expensive, for example DOM or JDOM nodes. -
toString
Description copied from class:NodeTest
Display the type descriptor for diagnostics -
getSuperType
Get the supertype of this type. This isn't actually a well-defined concept: the types form a lattice rather than a strict hierarchy.- Specified by:
getSuperType
in interfaceItemType
- Overrides:
getSuperType
in classNodeTest
- Parameters:
th
-- Returns:
- the supertype, or null if this type is item()
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getNodeKindMask
public int getNodeKindMask()Get a mask indicating which kinds of nodes this NodeTest can match. This is a combination of bits: 1invalid input: '<'invalid input: '<'Type.ELEMENT for element nodes, 1invalid input: '<'invalid input: '<'Type.TEXT for text nodes, and so on.- Specified by:
getNodeKindMask
in classNodeTest
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getPrimitiveType
public int getPrimitiveType()Get the basic kind of object that this ItemType matches: for a NodeTest, this is the kind of node, or Type.Node if it matches different kinds of nodes.- Specified by:
getPrimitiveType
in interfaceItemType
- Overrides:
getPrimitiveType
in classNodeTest
- Returns:
- the node kind matched by this node test
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getRequiredNodeNames
Get the set of node names allowed by this NodeTest. This is returned as a set of Integer fingerprints. A null value indicates that all names are permitted (i.e. that there are no constraints on the node name. The default implementation returns null.- Overrides:
getRequiredNodeNames
in classNodeTest
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getContentType
Get the content type allowed by this NodeTest (that is, the type annotation of the matched nodes). Return AnyType if there are no restrictions. The default implementation returns AnyType.- Overrides:
getContentType
in classNodeTest
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getAtomizedItemType
Get the item type of the atomic values that will be produced when an item of this type is atomized (assuming that atomization succeeds)- Specified by:
getAtomizedItemType
in interfaceItemType
- Overrides:
getAtomizedItemType
in classNodeTest
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getFingerprint
public int getFingerprint()Get the name of the nodes matched by this nodetest, if it matches a specific name. Return -1 if the node test matches nodes of more than one name- Overrides:
getFingerprint
in classNodeTest
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isNillable
public boolean isNillable()Determine whether the content type (if present) is nillable- Overrides:
isNillable
in classNodeTest
- Returns:
- true if the content test (when present) can match nodes that are nilled
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hashCode
public int hashCode()Returns a hash code value for the object. -
equals
Indicates whether some other object is "equal to" this one. -
getDefaultPriority
public double getDefaultPriority()get the default priority of this nodeTest when used as a pattern- Specified by:
getDefaultPriority
in classNodeTest
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getComponentNodeTests
Get the two parts of the combined node test
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