Package net.sf.saxon.expr
Class StaticProperty
- java.lang.Object
-
- net.sf.saxon.expr.StaticProperty
-
public abstract class StaticProperty extends java.lang.Object
This class contains constants identifying dependencies that an XPath expression might have on its context.
-
-
Field Summary
Fields Modifier and Type Field Description static int
ALL_NODES_NEWLY_CREATED
Expression property: this bit indicates that the expression will always create new nodes: more specifically, any node in the result of the expression is guaranteed to be a newly created node.static int
ALL_NODES_UNTYPED
Expression property: this bit indicates that in the result of an expression, any element and attribute nodes that are present will have type annotation xs:untyped or xs:untypedAtomic respectively, and that any document nodes that are present will have no element children whose type annotation is anything other than xs:untypedstatic int
ALLOWS_MANY
Bit set if multiple values are allowedstatic int
ALLOWS_ONE
Bit set if a single value is allowedstatic int
ALLOWS_ONE_OR_MORE
Occurence indicator for "one or more" (+)static int
ALLOWS_ZERO
static int
ALLOWS_ZERO_OR_MORE
Occurrence indicator for "zero or more" (*)static int
ALLOWS_ZERO_OR_ONE
Occurence indicator for "zero or one" (?)static int
ATTRIBUTE_NS_NODESET
Expression property: this bit is set by getProperties() in the case of an expression that delivers a set of nodes with the guarantee that every node in the result will be an attribute or namespace of the context nodestatic int
CARDINALITY_MASK
Mask for all cardinality bitsstatic int
COMPUTED_FUNCTION
Expression property: this bit indicates that the result of an expression will be a function other than a map or arraystatic int
CONTEXT_DOCUMENT_NODESET
Expression property: this bit is set by getProperties() in the case of an expression whose item type is node, when the nodes in the result are guaranteed all to be in the same document as the context node.static int
DEPENDENCY_MASK
Mask to select all the dependency bitsstatic int
DEPENDS_ON_ASSIGNABLE_GLOBALS
Bit setting: Expression depends on assignable global variablesstatic int
DEPENDS_ON_CONTEXT_DOCUMENT
Bit setting: Expression depends on the document containing the context nodestatic int
DEPENDS_ON_CONTEXT_ITEM
Bit setting: Expression depends on context item.static int
DEPENDS_ON_CURRENT_GROUP
Bit setting: Expression depends on current-group() and/or current-grouping-key()static int
DEPENDS_ON_CURRENT_ITEM
Bit setting: Expression depends on current() itemstatic int
DEPENDS_ON_FOCUS
Combination of bits representing dependencies on the focusstatic int
DEPENDS_ON_LAST
Bit setting: Expression depends on last()static int
DEPENDS_ON_LOCAL_VARIABLES
Bit setting: Expression depends on local variables (excluding local variables declared within the expression itself)static int
DEPENDS_ON_NON_DOCUMENT_FOCUS
Combination of bits representing dependencies on the focus, but excluding dependencies on the current documentstatic int
DEPENDS_ON_OWN_RANGE_VARIABLES
Bit setting: Expression binds (and typically references) its own range variablesstatic int
DEPENDS_ON_POSITION
Bit setting: Expression depends on position()static int
DEPENDS_ON_REGEX_GROUP
Bit setting: Expression depends on regex-group()static int
DEPENDS_ON_RUNTIME_ENVIRONMENT
Bit setting: Expression can't be evaluated at compile time for reasons other than the abovestatic int
DEPENDS_ON_STATIC_CONTEXT
Bit setting: Expression depends on the static context, specifically, a part of the static context that can vary from one expression in a query/stylesheet to another; the main examples of this are the static base URI and the default collationstatic int
DEPENDS_ON_USER_FUNCTIONS
Bit setting: Expression depends on user-defined functionsstatic int
DEPENDS_ON_XSLT_CONTEXT
Combination of bits representing dependencies on the XSLT contextstatic int
EMPTY
Occurence indicator when an empty sequence is requiredstatic int
EXACTLY_ONE
Occurence indicator for "exactly one" (default occurrence indicator)static int
HAS_SIDE_EFFECTS
Expression property: this bit indicates that an expression has (or might have) side-effects.static int
NO_NODES_NEWLY_CREATED
Expression property: this bit is set in the case of an expression that will never return newly created nodes, nor a value that depends on the identity of newly created nodes (for example generate-id(new-node())).static int
NODESET_PROPERTIES
Mask for nodeset-related propertiesstatic int
NOT_UNTYPED_ATOMIC
Expression property: this bit indicates that although the static type of the expression permits untyped atomic values, it is known that the value will not be untyped atomic.static int
ORDERED_NODESET
Expression property: this bit is set by getProperties() in the case of an expression whose item type is node, when the nodes in the result are in document order.static int
PEER_NODESET
Expression property: this bit is set by getProperties() in the case of an expression that delivers a set of nodes with the guarantee that no node in the set will be an ancestor of any other.static int
REVERSE_DOCUMENT_ORDER
Expression property: this bit is set by getProperties() in the case of an expression that delivers items in the reverse of the correct order, when unordered retrieval is requested.static int
SINGLE_DOCUMENT_NODESET
Expression property: this bit is set in the case of an expression that delivers a set of nodes that are all in the same document (not necessarily the same document as the context node).static int
SPECIAL_PROPERTY_MASK
Mask for "special properties": that is, all properties other than cardinality and dependenciesstatic int
SUBTREE_NODESET
Expression property: this bit is set by getProperties() in the case of an expression that delivers a set of nodes with the guarantee that every node in the result will be a descendant or self, or attribute or namespace, of the context node
-
Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static java.lang.String
display(int props)
static int
getCardinalityCode(int cardinality)
Reduce the cardinality value to an integer in the range 0-7
-
-
-
Field Detail
-
DEPENDS_ON_CURRENT_ITEM
public static final int DEPENDS_ON_CURRENT_ITEM
Bit setting: Expression depends on current() item- See Also:
- Constant Field Values
-
DEPENDS_ON_CONTEXT_ITEM
public static final int DEPENDS_ON_CONTEXT_ITEM
Bit setting: Expression depends on context item. This setting is NOT used where the expression depends only on the context document: that is indicated byDEPENDS_ON_CONTEXT_DOCUMENT
.- See Also:
- Constant Field Values
-
DEPENDS_ON_POSITION
public static final int DEPENDS_ON_POSITION
Bit setting: Expression depends on position()- See Also:
- Constant Field Values
-
DEPENDS_ON_LAST
public static final int DEPENDS_ON_LAST
Bit setting: Expression depends on last()- See Also:
- Constant Field Values
-
DEPENDS_ON_CONTEXT_DOCUMENT
public static final int DEPENDS_ON_CONTEXT_DOCUMENT
Bit setting: Expression depends on the document containing the context node- See Also:
- Constant Field Values
-
DEPENDS_ON_CURRENT_GROUP
public static final int DEPENDS_ON_CURRENT_GROUP
Bit setting: Expression depends on current-group() and/or current-grouping-key()- See Also:
- Constant Field Values
-
DEPENDS_ON_REGEX_GROUP
public static final int DEPENDS_ON_REGEX_GROUP
Bit setting: Expression depends on regex-group()- See Also:
- Constant Field Values
-
DEPENDS_ON_LOCAL_VARIABLES
public static final int DEPENDS_ON_LOCAL_VARIABLES
Bit setting: Expression depends on local variables (excluding local variables declared within the expression itself)- See Also:
- Constant Field Values
-
DEPENDS_ON_USER_FUNCTIONS
public static final int DEPENDS_ON_USER_FUNCTIONS
Bit setting: Expression depends on user-defined functions- See Also:
- Constant Field Values
-
DEPENDS_ON_ASSIGNABLE_GLOBALS
public static final int DEPENDS_ON_ASSIGNABLE_GLOBALS
Bit setting: Expression depends on assignable global variables- See Also:
- Constant Field Values
-
DEPENDS_ON_RUNTIME_ENVIRONMENT
public static final int DEPENDS_ON_RUNTIME_ENVIRONMENT
Bit setting: Expression can't be evaluated at compile time for reasons other than the above- See Also:
- Constant Field Values
-
DEPENDS_ON_STATIC_CONTEXT
public static final int DEPENDS_ON_STATIC_CONTEXT
Bit setting: Expression depends on the static context, specifically, a part of the static context that can vary from one expression in a query/stylesheet to another; the main examples of this are the static base URI and the default collation- See Also:
- Constant Field Values
-
DEPENDS_ON_OWN_RANGE_VARIABLES
public static final int DEPENDS_ON_OWN_RANGE_VARIABLES
Bit setting: Expression binds (and typically references) its own range variables- See Also:
- Constant Field Values
-
DEPENDS_ON_XSLT_CONTEXT
public static final int DEPENDS_ON_XSLT_CONTEXT
Combination of bits representing dependencies on the XSLT context- See Also:
- Constant Field Values
-
DEPENDS_ON_FOCUS
public static final int DEPENDS_ON_FOCUS
Combination of bits representing dependencies on the focus- See Also:
- Constant Field Values
-
DEPENDS_ON_NON_DOCUMENT_FOCUS
public static final int DEPENDS_ON_NON_DOCUMENT_FOCUS
Combination of bits representing dependencies on the focus, but excluding dependencies on the current document- See Also:
- Constant Field Values
-
ALLOWS_ZERO
public static final int ALLOWS_ZERO
- See Also:
- Constant Field Values
-
ALLOWS_ONE
public static final int ALLOWS_ONE
Bit set if a single value is allowed- See Also:
- Constant Field Values
-
ALLOWS_MANY
public static final int ALLOWS_MANY
Bit set if multiple values are allowed- See Also:
- Constant Field Values
-
CARDINALITY_MASK
public static final int CARDINALITY_MASK
Mask for all cardinality bits- See Also:
- Constant Field Values
-
ALLOWS_ONE_OR_MORE
public static final int ALLOWS_ONE_OR_MORE
Occurence indicator for "one or more" (+)- See Also:
- Constant Field Values
-
ALLOWS_ZERO_OR_MORE
public static final int ALLOWS_ZERO_OR_MORE
Occurrence indicator for "zero or more" (*)- See Also:
- Constant Field Values
-
ALLOWS_ZERO_OR_ONE
public static final int ALLOWS_ZERO_OR_ONE
Occurence indicator for "zero or one" (?)- See Also:
- Constant Field Values
-
EXACTLY_ONE
public static final int EXACTLY_ONE
Occurence indicator for "exactly one" (default occurrence indicator)- See Also:
- Constant Field Values
-
EMPTY
public static final int EMPTY
Occurence indicator when an empty sequence is required- See Also:
- Constant Field Values
-
CONTEXT_DOCUMENT_NODESET
public static final int CONTEXT_DOCUMENT_NODESET
Expression property: this bit is set by getProperties() in the case of an expression whose item type is node, when the nodes in the result are guaranteed all to be in the same document as the context node. For expressions that return values other than nodes, the setting is undefined.- See Also:
- Constant Field Values
-
ORDERED_NODESET
public static final int ORDERED_NODESET
Expression property: this bit is set by getProperties() in the case of an expression whose item type is node, when the nodes in the result are in document order.- See Also:
- Constant Field Values
-
REVERSE_DOCUMENT_ORDER
public static final int REVERSE_DOCUMENT_ORDER
Expression property: this bit is set by getProperties() in the case of an expression that delivers items in the reverse of the correct order, when unordered retrieval is requested.- See Also:
- Constant Field Values
-
PEER_NODESET
public static final int PEER_NODESET
Expression property: this bit is set by getProperties() in the case of an expression that delivers a set of nodes with the guarantee that no node in the set will be an ancestor of any other. This property is useful in deciding whether the results of a path expression are pre-sorted. The property is only used in the case where the ORDERED_NODESET property is true, so there is no point in setting it in other cases.- See Also:
- Constant Field Values
-
SUBTREE_NODESET
public static final int SUBTREE_NODESET
Expression property: this bit is set by getProperties() in the case of an expression that delivers a set of nodes with the guarantee that every node in the result will be a descendant or self, or attribute or namespace, of the context node- See Also:
- Constant Field Values
-
ATTRIBUTE_NS_NODESET
public static final int ATTRIBUTE_NS_NODESET
Expression property: this bit is set by getProperties() in the case of an expression that delivers a set of nodes with the guarantee that every node in the result will be an attribute or namespace of the context node- See Also:
- Constant Field Values
-
ALL_NODES_NEWLY_CREATED
public static final int ALL_NODES_NEWLY_CREATED
Expression property: this bit indicates that the expression will always create new nodes: more specifically, any node in the result of the expression is guaranteed to be a newly created node.- See Also:
- Constant Field Values
-
NO_NODES_NEWLY_CREATED
public static final int NO_NODES_NEWLY_CREATED
Expression property: this bit is set in the case of an expression that will never return newly created nodes, nor a value that depends on the identity of newly created nodes (for example generate-id(new-node())). Expressions that are capable of creating new nodes cannot be moved out of loops as this could cause too few nodes to be created: for example if f() creates a new node, then count(for $i in 1 to 5 return f()) must be 5.- See Also:
- Constant Field Values
-
SINGLE_DOCUMENT_NODESET
public static final int SINGLE_DOCUMENT_NODESET
Expression property: this bit is set in the case of an expression that delivers a set of nodes that are all in the same document (not necessarily the same document as the context node).- See Also:
- Constant Field Values
-
HAS_SIDE_EFFECTS
public static final int HAS_SIDE_EFFECTS
Expression property: this bit indicates that an expression has (or might have) side-effects. This property is applied to calls on extension functions and to certain instructions such as xsl:result-document and xsl:message.- See Also:
- Constant Field Values
-
NOT_UNTYPED_ATOMIC
public static final int NOT_UNTYPED_ATOMIC
Expression property: this bit indicates that although the static type of the expression permits untyped atomic values, it is known that the value will not be untyped atomic.- See Also:
- Constant Field Values
-
ALL_NODES_UNTYPED
public static final int ALL_NODES_UNTYPED
Expression property: this bit indicates that in the result of an expression, any element and attribute nodes that are present will have type annotation xs:untyped or xs:untypedAtomic respectively, and that any document nodes that are present will have no element children whose type annotation is anything other than xs:untyped- See Also:
- Constant Field Values
-
COMPUTED_FUNCTION
public static final int COMPUTED_FUNCTION
Expression property: this bit indicates that the result of an expression will be a function other than a map or array- See Also:
- Constant Field Values
-
DEPENDENCY_MASK
public static final int DEPENDENCY_MASK
Mask to select all the dependency bits- See Also:
- Constant Field Values
-
SPECIAL_PROPERTY_MASK
public static final int SPECIAL_PROPERTY_MASK
Mask for "special properties": that is, all properties other than cardinality and dependencies- See Also:
- Constant Field Values
-
NODESET_PROPERTIES
public static final int NODESET_PROPERTIES
Mask for nodeset-related properties- See Also:
- Constant Field Values
-
-
Method Detail
-
getCardinalityCode
public static int getCardinalityCode(int cardinality)
Reduce the cardinality value to an integer in the range 0-7- Parameters:
cardinality
- the result of calling getCardinality() on an expression- Returns:
- the cardinality code
-
display
public static java.lang.String display(int props)
-
-