Class ElemAttrs


  • public final class ElemAttrs
    extends java.lang.Object
    Container class that is constructed with enough raw attribute information, to be able to lazily construct full attribute objects, to be accessed via Iterator, or fully-qualified name.

    Implementation note: code for using Map-like structure is unfortunately cut'n pasted from AttributeCollector. Problem with refactoring is that it's 90% the same code, but not 100%.

    Although instances of this class are constructed by stream readers, it is actually used by element event objects.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private int mAttrHashSize  
      private int[] mAttrMap  
      private int mAttrSpillEnd  
      private int mDefaultOffset
      Raw offset (in mRawAttrs) of the first attribute instance that was created through default value expansion.
      private java.lang.String[] mRawAttrs
      Array that contains 4 Strings for each attribute; localName, URI, prefix, value.
      private static int OFFSET_NS_URI  
    • Constructor Summary

      Constructors 
      Constructor Description
      ElemAttrs​(java.lang.String[] rawAttrs, int defOffset)
      Method called to create "short" attribute list; list that has only few entries, and can thus be searched for attributes using linear search, without using any kind of Map structure.
      ElemAttrs​(java.lang.String[] rawAttrs, int defOffset, int[] attrMap, int hashSize, int spillEnd)
      Method called to create "long" attribute list; list that has a few entries, and efficient access by fully-qualified name should not be done by linear search.
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      int findIndex​(javax.xml.namespace.QName name)  
      private int findMapIndex​(java.lang.String nsURI, java.lang.String localName)
      Note: this method is very similar to com.ctc.wstx.sr.AttributeCollector#getAttrValue; basically most of it was cut'n pasted.
      int getFirstDefaultOffset()  
      java.lang.String[] getRawAttrs()  
      boolean isDefault​(int ix)  
      • Methods inherited from class java.lang.Object

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

      • mRawAttrs

        private final java.lang.String[] mRawAttrs
        Array that contains 4 Strings for each attribute; localName, URI, prefix, value. Can be used to lazily construct structure(s) needed to return Iterator for accessing all attributes.
      • mDefaultOffset

        private final int mDefaultOffset
        Raw offset (in mRawAttrs) of the first attribute instance that was created through default value expansion.
      • mAttrMap

        private final int[] mAttrMap
      • mAttrHashSize

        private final int mAttrHashSize
      • mAttrSpillEnd

        private final int mAttrSpillEnd
    • Constructor Detail

      • ElemAttrs

        public ElemAttrs​(java.lang.String[] rawAttrs,
                         int defOffset)
        Method called to create "short" attribute list; list that has only few entries, and can thus be searched for attributes using linear search, without using any kind of Map structure.

        Currently the limit is 4 attributes; 1, 2 or 3 attribute lists are considered short, 4 or more 'long'.

        Parameters:
        rawAttrs - Array that contains 4 Strings for each attribute; localName, URI, prefix, value. Can be used to lazily construct structure(s) needed to return Iterator for accessing all attributes.
        defOffset - Index of the first default attribute, if any; number of all attributes if none
      • ElemAttrs

        public ElemAttrs​(java.lang.String[] rawAttrs,
                         int defOffset,
                         int[] attrMap,
                         int hashSize,
                         int spillEnd)
        Method called to create "long" attribute list; list that has a few entries, and efficient access by fully-qualified name should not be done by linear search.
        Parameters:
        rawAttrs - Array that contains 4 Strings for each attribute; localName, URI, prefix, value. Can be used to lazily construct structure(s) needed to return Iterator for accessing all attributes.
    • Method Detail

      • getRawAttrs

        public java.lang.String[] getRawAttrs()
      • findIndex

        public int findIndex​(javax.xml.namespace.QName name)
      • getFirstDefaultOffset

        public int getFirstDefaultOffset()
      • isDefault

        public boolean isDefault​(int ix)
      • findMapIndex

        private final int findMapIndex​(java.lang.String nsURI,
                                       java.lang.String localName)

        Note: this method is very similar to com.ctc.wstx.sr.AttributeCollector#getAttrValue; basically most of it was cut'n pasted. Would be nice to refactor, but it's bit hard to do that since data structures are not 100% identical (mostly attribute storage, not Map structure itself).