Class XMLAttributesImpl

  • All Implemented Interfaces:
    org.apache.xerces.xni.XMLAttributes

    public class XMLAttributesImpl
    extends java.lang.Object
    implements org.apache.xerces.xni.XMLAttributes
    The XMLAttributesImpl class is an implementation of the XMLAttributes interface which defines a collection of attributes for an element. In the parser, the document source would scan the entire start element and collect the attributes. The attributes are communicated to the document handler in the startElement method.

    The attributes are read-write so that subsequent stages in the document pipeline can modify the values or change the attributes that are propogated to the next stage.

    Version:
    $Id: XMLAttributesImpl.java 1357381 2012-07-04 19:56:10Z mrglavas $
    Author:
    Andy Clark, IBM, Elena Litani, IBM, Michael Glavassevich, IBM
    See Also:
    XMLDocumentHandler.startElement(org.apache.xerces.xni.QName, org.apache.xerces.xni.XMLAttributes, org.apache.xerces.xni.Augmentations)
    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected org.apache.xerces.util.XMLAttributesImpl.Attribute[] fAttributes
      Attribute information.
      protected org.apache.xerces.util.XMLAttributesImpl.Attribute[] fAttributeTableView
      Hashtable of attribute information.
      protected int[] fAttributeTableViewChainState
      Tracks whether each chain in the hash table is stale with respect to the current state of this object.
      protected int[] fHashMultipliers
      Array of randomly selected hash function multipliers or null if the default String.hashCode() function should be used.
      protected boolean fIsTableViewConsistent
      Indicates whether the table view contains consistent data.
      protected int fLargeCount
      Usage count for the attribute table view.
      protected int fLength
      Attribute count.
      protected boolean fNamespaces
      Namespaces.
      protected int fTableViewBuckets
      Actual number of buckets in the table view.
      protected static int MAX_HASH_COLLISIONS
      Maximum hash collisions per bucket.
      protected static int MULTIPLIERS_MASK  
      protected static int MULTIPLIERS_SIZE  
      protected static int SIZE_LIMIT
      Threshold at which an instance is treated as a large attribute list.
      protected static int TABLE_SIZE
      Default table size.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      int addAttribute​(org.apache.xerces.xni.QName name, java.lang.String type, java.lang.String value)
      Adds an attribute.
      void addAttributeNS​(org.apache.xerces.xni.QName name, java.lang.String type, java.lang.String value)
      Adds an attribute.
      org.apache.xerces.xni.QName checkDuplicatesNS()
      Checks for duplicate expanded names (local part and namespace name pairs) in the attribute specification.
      protected void cleanTableView()
      Purges all elements from the table view.
      org.apache.xerces.xni.Augmentations getAugmentations​(int attributeIndex)
      Look up an augmentations by attributes index.
      org.apache.xerces.xni.Augmentations getAugmentations​(java.lang.String qName)
      Look up an augmentation by XML 1.0 qualified name.
      org.apache.xerces.xni.Augmentations getAugmentations​(java.lang.String uri, java.lang.String localName)
      Look up an augmentations by Namespace name.
      int getIndex​(java.lang.String qName)
      Look up the index of an attribute by XML 1.0 qualified name.
      int getIndex​(java.lang.String uri, java.lang.String localPart)
      Look up the index of an attribute by Namespace name.
      int getIndexFast​(java.lang.String qName)
      Look up the index of an attribute by XML 1.0 qualified name.
      int getIndexFast​(java.lang.String uri, java.lang.String localPart)
      Look up the index of an attribute by Namespace name.
      int getLength()
      Return the number of attributes in the list.
      java.lang.String getLocalName​(int index)
      Look up an attribute's local name by index.
      java.lang.String getName​(int index)
      Return the name of an attribute in this list (by position).
      void getName​(int attrIndex, org.apache.xerces.xni.QName attrName)
      Sets the fields in the given QName structure with the values of the attribute name at the specified index.
      java.lang.String getNonNormalizedValue​(int attrIndex)
      Returns the non-normalized value of the attribute at the specified index.
      java.lang.String getPrefix​(int index)
      Returns the prefix of the attribute at the specified index.
      java.lang.String getQName​(int index)
      Look up an attribute's XML 1.0 qualified name by index.
      protected int getTableViewBucket​(java.lang.String qname)
      Returns the position in the table view where the given attribute name would be hashed.
      protected int getTableViewBucket​(java.lang.String localpart, java.lang.String uri)
      Returns the position in the table view where the given attribute name would be hashed.
      java.lang.String getType​(int index)
      Look up an attribute's type by index.
      java.lang.String getType​(java.lang.String qname)
      Look up an attribute's type by XML 1.0 qualified name.
      java.lang.String getType​(java.lang.String uri, java.lang.String localName)
      Look up an attribute's type by Namespace name.
      java.lang.String getURI​(int index)
      Look up an attribute's Namespace URI by index.
      java.lang.String getValue​(int index)
      Look up an attribute's value by index.
      java.lang.String getValue​(java.lang.String qname)
      Look up an attribute's value by XML 1.0 qualified name.
      java.lang.String getValue​(java.lang.String uri, java.lang.String localName)
      Look up an attribute's value by Namespace name.
      boolean isSpecified​(int attrIndex)
      Returns true if the attribute is specified in the instance document.
      protected void prepareAndPopulateTableView()
      Prepares the table view of the attributes list for use, and populates it with the attributes which have been previously read.
      protected void prepareTableView()
      Prepares the table view of the attributes list for use.
      void removeAllAttributes()
      Removes all of the attributes.
      void removeAttributeAt​(int attrIndex)
      Removes the attribute at the specified index.
      void setAugmentations​(int attrIndex, org.apache.xerces.xni.Augmentations augs)
      Sets the augmentations of the attribute at the specified index.
      void setName​(int attrIndex, org.apache.xerces.xni.QName attrName)
      Sets the name of the attribute at the specified index.
      void setNamespaces​(boolean namespaces)
      Sets whether namespace processing is being performed.
      void setNonNormalizedValue​(int attrIndex, java.lang.String attrValue)
      Sets the non-normalized value of the attribute at the specified index.
      void setSpecified​(int attrIndex, boolean specified)
      Sets whether an attribute is specified in the instance document or not.
      void setType​(int attrIndex, java.lang.String attrType)
      Sets the type of the attribute at the specified index.
      void setURI​(int attrIndex, java.lang.String uri)
      Sets the uri of the attribute at the specified index.
      void setValue​(int attrIndex, java.lang.String attrValue)
      Sets the value of the attribute at the specified index.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • MAX_HASH_COLLISIONS

        protected static final int MAX_HASH_COLLISIONS
        Maximum hash collisions per bucket.
        See Also:
        Constant Field Values
      • SIZE_LIMIT

        protected static final int SIZE_LIMIT
        Threshold at which an instance is treated as a large attribute list.
        See Also:
        Constant Field Values
      • fNamespaces

        protected boolean fNamespaces
        Namespaces.
      • fLargeCount

        protected int fLargeCount
        Usage count for the attribute table view. Incremented each time all attributes are removed when the attribute table view is in use.
      • fLength

        protected int fLength
        Attribute count.
      • fAttributes

        protected org.apache.xerces.util.XMLAttributesImpl.Attribute[] fAttributes
        Attribute information.
      • fAttributeTableView

        protected org.apache.xerces.util.XMLAttributesImpl.Attribute[] fAttributeTableView
        Hashtable of attribute information. Provides an alternate view of the attribute specification.
      • fAttributeTableViewChainState

        protected int[] fAttributeTableViewChainState
        Tracks whether each chain in the hash table is stale with respect to the current state of this object. A chain is stale if its state is not the same as the number of times the attribute table view has been used.
      • fTableViewBuckets

        protected int fTableViewBuckets
        Actual number of buckets in the table view.
      • fIsTableViewConsistent

        protected boolean fIsTableViewConsistent
        Indicates whether the table view contains consistent data.
      • fHashMultipliers

        protected int[] fHashMultipliers
        Array of randomly selected hash function multipliers or null if the default String.hashCode() function should be used.
    • Constructor Detail

      • XMLAttributesImpl

        public XMLAttributesImpl()
        Default constructor.
      • XMLAttributesImpl

        public XMLAttributesImpl​(int tableSize)
        Parameters:
        tableSize - initial size of table view
    • Method Detail

      • setNamespaces

        public void setNamespaces​(boolean namespaces)
        Sets whether namespace processing is being performed. This state is needed to return the correct value from the getLocalName method.
        Parameters:
        namespaces - True if namespace processing is turned on.
        See Also:
        getLocalName(int)
      • addAttribute

        public int addAttribute​(org.apache.xerces.xni.QName name,
                                java.lang.String type,
                                java.lang.String value)
        Adds an attribute. The attribute's non-normalized value of the attribute will have the same value as the attribute value until set using the setNonNormalizedValue method. Also, the added attribute will be marked as specified in the XML instance document unless set otherwise using the setSpecified method.

        Note: If an attribute of the same name already exists, the old values for the attribute are replaced by the new values.

        Specified by:
        addAttribute in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        name - The attribute name.
        type - The attribute type. The type name is determined by the type specified for this attribute in the DTD. For example: "CDATA", "ID", "NMTOKEN", etc. However, attributes of type enumeration will have the type value specified as the pipe ('|') separated list of the enumeration values prefixed by an open parenthesis and suffixed by a close parenthesis. For example: "(true|false)".
        value - The attribute value.
        Returns:
        Returns the attribute index.
        See Also:
        setNonNormalizedValue(int, java.lang.String), setSpecified(int, boolean)
      • removeAllAttributes

        public void removeAllAttributes()
        Removes all of the attributes. This method will also remove all entities associated to the attributes.
        Specified by:
        removeAllAttributes in interface org.apache.xerces.xni.XMLAttributes
      • removeAttributeAt

        public void removeAttributeAt​(int attrIndex)
        Removes the attribute at the specified index.

        Note: This operation changes the indexes of all attributes following the attribute at the specified index.

        Specified by:
        removeAttributeAt in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        attrIndex - The attribute index.
      • setName

        public void setName​(int attrIndex,
                            org.apache.xerces.xni.QName attrName)
        Sets the name of the attribute at the specified index.
        Specified by:
        setName in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        attrIndex - The attribute index.
        attrName - The new attribute name.
      • getName

        public void getName​(int attrIndex,
                            org.apache.xerces.xni.QName attrName)
        Sets the fields in the given QName structure with the values of the attribute name at the specified index.
        Specified by:
        getName in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        attrIndex - The attribute index.
        attrName - The attribute name structure to fill in.
      • setType

        public void setType​(int attrIndex,
                            java.lang.String attrType)
        Sets the type of the attribute at the specified index.
        Specified by:
        setType in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        attrIndex - The attribute index.
        attrType - The attribute type. The type name is determined by the type specified for this attribute in the DTD. For example: "CDATA", "ID", "NMTOKEN", etc. However, attributes of type enumeration will have the type value specified as the pipe ('|') separated list of the enumeration values prefixed by an open parenthesis and suffixed by a close parenthesis. For example: "(true|false)".
      • setValue

        public void setValue​(int attrIndex,
                             java.lang.String attrValue)
        Sets the value of the attribute at the specified index. This method will overwrite the non-normalized value of the attribute.
        Specified by:
        setValue in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        attrIndex - The attribute index.
        attrValue - The new attribute value.
        See Also:
        setNonNormalizedValue(int, java.lang.String)
      • setNonNormalizedValue

        public void setNonNormalizedValue​(int attrIndex,
                                          java.lang.String attrValue)
        Sets the non-normalized value of the attribute at the specified index.
        Specified by:
        setNonNormalizedValue in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        attrIndex - The attribute index.
        attrValue - The new non-normalized attribute value.
      • getNonNormalizedValue

        public java.lang.String getNonNormalizedValue​(int attrIndex)
        Returns the non-normalized value of the attribute at the specified index. If no non-normalized value is set, this method will return the same value as the getValue(int) method.
        Specified by:
        getNonNormalizedValue in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        attrIndex - The attribute index.
      • setSpecified

        public void setSpecified​(int attrIndex,
                                 boolean specified)
        Sets whether an attribute is specified in the instance document or not.
        Specified by:
        setSpecified in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        attrIndex - The attribute index.
        specified - True if the attribute is specified in the instance document.
      • isSpecified

        public boolean isSpecified​(int attrIndex)
        Returns true if the attribute is specified in the instance document.
        Specified by:
        isSpecified in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        attrIndex - The attribute index.
      • getLength

        public int getLength()
        Return the number of attributes in the list.

        Once you know the number of attributes, you can iterate through the list.

        Specified by:
        getLength in interface org.apache.xerces.xni.XMLAttributes
        Returns:
        The number of attributes in the list.
        See Also:
        XMLAttributes.getURI(int), XMLAttributes.getLocalName(int), XMLAttributes.getQName(int), XMLAttributes.getType(int), XMLAttributes.getValue(int)
      • getType

        public java.lang.String getType​(int index)
        Look up an attribute's type by index.

        The attribute type is one of the strings "CDATA", "ID", "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY", "ENTITIES", or "NOTATION" (always in upper case).

        If the parser has not read a declaration for the attribute, or if the parser does not report attribute types, then it must return the value "CDATA" as stated in the XML 1.0 Recommentation (clause 3.3.3, "Attribute-Value Normalization").

        For an enumerated attribute that is not a notation, the parser will report the type as "NMTOKEN".

        Specified by:
        getType in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        index - The attribute index (zero-based).
        Returns:
        The attribute's type as a string, or null if the index is out of range.
        See Also:
        getLength()
      • getType

        public java.lang.String getType​(java.lang.String qname)
        Look up an attribute's type by XML 1.0 qualified name.

        See getType(int) for a description of the possible types.

        Specified by:
        getType in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        qname - The XML 1.0 qualified name.
        Returns:
        The attribute type as a string, or null if the attribute is not in the list or if qualified names are not available.
      • getValue

        public java.lang.String getValue​(int index)
        Look up an attribute's value by index.

        If the attribute value is a list of tokens (IDREFS, ENTITIES, or NMTOKENS), the tokens will be concatenated into a single string with each token separated by a single space.

        Specified by:
        getValue in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        index - The attribute index (zero-based).
        Returns:
        The attribute's value as a string, or null if the index is out of range.
        See Also:
        getLength()
      • getValue

        public java.lang.String getValue​(java.lang.String qname)
        Look up an attribute's value by XML 1.0 qualified name.

        See getValue(int) for a description of the possible values.

        Specified by:
        getValue in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        qname - The XML 1.0 qualified name.
        Returns:
        The attribute value as a string, or null if the attribute is not in the list or if qualified names are not available.
      • getName

        public java.lang.String getName​(int index)
        Return the name of an attribute in this list (by position).

        The names must be unique: the SAX parser shall not include the same attribute twice. Attributes without values (those declared #IMPLIED without a value specified in the start tag) will be omitted from the list.

        If the attribute name has a namespace prefix, the prefix will still be attached.

        Parameters:
        index - The index of the attribute in the list (starting at 0).
        Returns:
        The name of the indexed attribute, or null if the index is out of range.
        See Also:
        getLength()
      • getIndex

        public int getIndex​(java.lang.String qName)
        Look up the index of an attribute by XML 1.0 qualified name.
        Specified by:
        getIndex in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        qName - The qualified (prefixed) name.
        Returns:
        The index of the attribute, or -1 if it does not appear in the list.
      • getIndex

        public int getIndex​(java.lang.String uri,
                            java.lang.String localPart)
        Look up the index of an attribute by Namespace name.
        Specified by:
        getIndex in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        uri - The Namespace URI, or null if the name has no Namespace URI.
        localPart - The attribute's local name.
        Returns:
        The index of the attribute, or -1 if it does not appear in the list.
      • getLocalName

        public java.lang.String getLocalName​(int index)
        Look up an attribute's local name by index.
        Specified by:
        getLocalName in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        index - The attribute index (zero-based).
        Returns:
        The local name, or the empty string if Namespace processing is not being performed, or null if the index is out of range.
        See Also:
        getLength()
      • getQName

        public java.lang.String getQName​(int index)
        Look up an attribute's XML 1.0 qualified name by index.
        Specified by:
        getQName in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        index - The attribute index (zero-based).
        Returns:
        The XML 1.0 qualified name, or the empty string if none is available, or null if the index is out of range.
        See Also:
        getLength()
      • getType

        public java.lang.String getType​(java.lang.String uri,
                                        java.lang.String localName)
        Look up an attribute's type by Namespace name.

        See getType(int) for a description of the possible types.

        Specified by:
        getType in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        uri - The Namespace URI, or null if the name has no Namespace URI.
        localName - The local name of the attribute.
        Returns:
        The attribute type as a string, or null if the attribute is not in the list or if Namespace processing is not being performed.
      • getPrefix

        public java.lang.String getPrefix​(int index)
        Returns the prefix of the attribute at the specified index.
        Specified by:
        getPrefix in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        index - The index of the attribute.
      • getURI

        public java.lang.String getURI​(int index)
        Look up an attribute's Namespace URI by index.
        Specified by:
        getURI in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        index - The attribute index (zero-based).
        Returns:
        The Namespace URI
        See Also:
        getLength()
      • getValue

        public java.lang.String getValue​(java.lang.String uri,
                                         java.lang.String localName)
        Look up an attribute's value by Namespace name.

        See getValue(int) for a description of the possible values.

        Specified by:
        getValue in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        uri - The Namespace URI, or null if the
        localName - The local name of the attribute.
        Returns:
        The attribute value as a string, or null if the attribute is not in the list.
      • getAugmentations

        public org.apache.xerces.xni.Augmentations getAugmentations​(java.lang.String uri,
                                                                    java.lang.String localName)
        Look up an augmentations by Namespace name.
        Specified by:
        getAugmentations in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        uri - The Namespace URI, or null if the
        localName - The local name of the attribute.
        Returns:
        Augmentations
      • getAugmentations

        public org.apache.xerces.xni.Augmentations getAugmentations​(java.lang.String qName)
        Look up an augmentation by XML 1.0 qualified name.

        Specified by:
        getAugmentations in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        qName - The XML 1.0 qualified name.
        Returns:
        Augmentations
      • getAugmentations

        public org.apache.xerces.xni.Augmentations getAugmentations​(int attributeIndex)
        Look up an augmentations by attributes index.
        Specified by:
        getAugmentations in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        attributeIndex - The attribute index.
        Returns:
        Augmentations
      • setAugmentations

        public void setAugmentations​(int attrIndex,
                                     org.apache.xerces.xni.Augmentations augs)
        Sets the augmentations of the attribute at the specified index.
        Specified by:
        setAugmentations in interface org.apache.xerces.xni.XMLAttributes
        Parameters:
        attrIndex - The attribute index.
        augs - The augmentations.
      • setURI

        public void setURI​(int attrIndex,
                           java.lang.String uri)
        Sets the uri of the attribute at the specified index.
        Parameters:
        attrIndex - The attribute index.
        uri - Namespace uri
      • getIndexFast

        public int getIndexFast​(java.lang.String qName)
        Look up the index of an attribute by XML 1.0 qualified name.

        Note: This method uses reference comparison, and thus should only be used internally. We cannot use this method in any code exposed to users as they may not pass in unique strings.

        Parameters:
        qName - The qualified (prefixed) name.
        Returns:
        The index of the attribute, or -1 if it does not appear in the list.
      • addAttributeNS

        public void addAttributeNS​(org.apache.xerces.xni.QName name,
                                   java.lang.String type,
                                   java.lang.String value)
        Adds an attribute. The attribute's non-normalized value of the attribute will have the same value as the attribute value until set using the setNonNormalizedValue method. Also, the added attribute will be marked as specified in the XML instance document unless set otherwise using the setSpecified method.

        This method differs from addAttribute in that it does not check if an attribute of the same name already exists in the list before adding it. In order to improve performance of namespace processing, this method allows uniqueness checks to be deferred until all the namespace information is available after the entire attribute specification has been read.

        Caution: If this method is called it should not be mixed with calls to addAttribute unless it has been determined that all the attribute names are unique.

        Parameters:
        name - the attribute name
        type - the attribute type
        value - the attribute value
        See Also:
        setNonNormalizedValue(int, java.lang.String), setSpecified(int, boolean), checkDuplicatesNS()
      • checkDuplicatesNS

        public org.apache.xerces.xni.QName checkDuplicatesNS()
        Checks for duplicate expanded names (local part and namespace name pairs) in the attribute specification. If a duplicate is found its name is returned.

        This should be called once all the in-scope namespaces for the element enclosing these attributes is known, and after all the attributes have gone through namespace binding.

        Returns:
        the name of a duplicate attribute found in the search, otherwise null.
      • getIndexFast

        public int getIndexFast​(java.lang.String uri,
                                java.lang.String localPart)
        Look up the index of an attribute by Namespace name.

        Note: This method uses reference comparison, and thus should only be used internally. We cannot use this method in any code exposed to users as they may not pass in unique strings.

        Parameters:
        uri - The Namespace URI, or null if the name has no Namespace URI.
        localPart - The attribute's local name.
        Returns:
        The index of the attribute, or -1 if it does not appear in the list.
      • getTableViewBucket

        protected int getTableViewBucket​(java.lang.String qname)
        Returns the position in the table view where the given attribute name would be hashed.
        Parameters:
        qname - the attribute name
        Returns:
        the position in the table view where the given attribute would be hashed
      • getTableViewBucket

        protected int getTableViewBucket​(java.lang.String localpart,
                                         java.lang.String uri)
        Returns the position in the table view where the given attribute name would be hashed.
        Parameters:
        localpart - the local part of the attribute
        uri - the namespace name of the attribute
        Returns:
        the position in the table view where the given attribute would be hashed
      • cleanTableView

        protected void cleanTableView()
        Purges all elements from the table view.
      • prepareTableView

        protected void prepareTableView()
        Prepares the table view of the attributes list for use.
      • prepareAndPopulateTableView

        protected void prepareAndPopulateTableView()
        Prepares the table view of the attributes list for use, and populates it with the attributes which have been previously read.