net.sf.saxon.om

Interface AttributeMap

All Superinterfaces:

java.lang.Iterable<AttributeInfo>

All Known Implementing Classes:

AttributeMapWithIdentity, EmptyAttributeMap, LargeAttributeMap, SingletonAttributeMap, SmallAttributeMap

public interface AttributeMap
extends java.lang.Iterable<AttributeInfo>

AttributeMap represents an immutable collection of attributes available on a particular element node. An AttributeMap is an ordered collection of AttributeInfo objects. The order of the object represents document order.

Method Summary

Modifier and Type	Method and Description
default AttributeMap	apply(java.util.function.Function<AttributeInfo,AttributeInfo> mapper) Apply a function to every attribute in an attribute map, returning a new attribute map
default java.util.ArrayList<AttributeInfo>	asList() Get the contents of the AttributeMap as a list of AttributeInfo objects.
default AttributeInfo	get(NodeName name) Get the attribute with a given name, if it exists
default AttributeInfo	get(java.lang.String uri, java.lang.String local) Get the attribute with a given name, if it exists
default AttributeInfo	getByFingerprint(int fingerprint, NamePool namePool)
default java.lang.String	getValue(java.lang.String local) Get the value of a no-namespace attribute with a given local name, if it exists
default java.lang.String	getValue(java.lang.String uri, java.lang.String local) Get the value of the attribute with a given name, if it exists
default AttributeInfo	itemAt(int index) Get the AttributeInfo with a given index.
default AttributeMap	put(AttributeInfo att) Replace or add an attribute, to create a new AttributeMap
default AttributeMap	remove(NodeName name) Remove an existing attribute, to create a new AttributeMap
int	size() Return the number of attributes in the map.
default void	verify() Verify the consistency of the attribute map.

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Method Detail

size

int size()

Return the number of attributes in the map.

Returns:

The number of attributes in the map.

get

default AttributeInfo get(NodeName name)

Get the attribute with a given name, if it exists

Parameters:

name - the name of the required attribute

Returns:

the required attribute if it exists

get

default AttributeInfo get(java.lang.String uri,
                          java.lang.String local)

Get the attribute with a given name, if it exists

Parameters:

uri - the namespace part of the name of the required attribute

local - the local part of the name of the required attribute

Returns:

the required attribute if it exists

getByFingerprint

default AttributeInfo getByFingerprint(int fingerprint,
                                       NamePool namePool)

getValue

default java.lang.String getValue(java.lang.String uri,
                                  java.lang.String local)

Get the value of the attribute with a given name, if it exists

Parameters:

uri - the namespace URI part of the name of the required attribute

local - the local part of the name of the required attribute

Returns:

the value of the required attribute if it exists, or null otherwise

getValue

default java.lang.String getValue(java.lang.String local)

Get the value of a no-namespace attribute with a given local name, if it exists

Parameters:

local - the local part of the name of the required attribute; the attribute must be in no namespace

Returns:

the value of the required attribute if it exists, or null otherwise

put

default AttributeMap put(AttributeInfo att)

Replace or add an attribute, to create a new AttributeMap

Parameters:

att - the attribute to be added or replaced

Returns:

the new AttributeMap

remove

default AttributeMap remove(NodeName name)

Remove an existing attribute, to create a new AttributeMap

Parameters:

name - the name of the attribute to be removed (if it exists)

Returns:

a new attribute map in which the specified attribute is omitted. If the attribute map contains no attribute with the given name, the input attribute map (or one equivalent to it) is returned unchanged

verify

default void verify()

Verify the consistency of the attribute map. This performs an implementation-defined set of checks that might include checking for duplicates, checking that names are well-formed, checking for inappropriate use of the xml and xmlns namespaces, and checking the constraint that attributes in a namespace have a prefix, and vice versa. The default implementation does nothing.

Throws:

java.lang.IllegalStateException - if the attribute map is invalid.

apply

default AttributeMap apply(java.util.function.Function<AttributeInfo,AttributeInfo> mapper)

Apply a function to every attribute in an attribute map, returning a new attribute map

Parameters:

mapper - the mapping function to be applied to each attribute in the attribute map

Returns:

the attribute containing the attributes after the mapping function has been applied

asList

default java.util.ArrayList<AttributeInfo> asList()

Get the contents of the AttributeMap as a list of AttributeInfo objects.

The order of the returned list must be consistent with document order, with the order of the attribute axis, and with position-based retrieval of individual AttributeInfo objects; multiple calls are not required to return the same list, but they must be consistent in their ordering.

Modifying the returned list has no effect on the AttributeMap

Returns:

a list of attributes in the AttributeMap

itemAt

default AttributeInfo itemAt(int index)

Get the AttributeInfo with a given index.

Parameters:

index - the index position, zero-based. The order of index positions of attributes in an attribute map reflects document order.

Returns:

the AttributeInfo at the given position. In an immutable tree the result will always be equivalent to calling asList().get(index). However, if the tree has been modified, then the index values of the attributes may not be contiguous.

Throws:

java.lang.IndexOutOfBoundsException - if the index is out of range