org.apache.xindice.core.indexer
Class IndexPattern

java.lang.Object
  |
  +--org.apache.xindice.core.indexer.IndexPattern

All Implemented Interfaces:

Streamable

public final class IndexPattern

extends java.lang.Object

implements Streamable

IndexPattern is the internal representation of a pattern for index matching purposes.

Field Summary

static int	PATTERN_NAME
static int	PATTERN_NONE
static int	PATTERN_WILDCARD
static int	SCORE_NAME
static int	SCORE_NATURAL
static int	SCORE_NONE
static int	SCORE_WILDCARD

Constructor Summary

IndexPattern(SymbolTable symbols, short elemID)

IndexPattern(SymbolTable symbols, short elemID, short attrID)

IndexPattern(SymbolTable symbols, short elemID, java.lang.String attrName)

IndexPattern(SymbolTable symbols, java.lang.String pattern, NamespaceMap nsMap)

Method Summary

boolean	equals(java.lang.Object obj)
short	getAttributeID() getAttributeID returns the Attribute Symbol ID for this pattern if there is one, otherwise it returns a negative value.
java.lang.String	getAttributeName() getAttributeName returns the Attribute Name for this pattern if there is one, otherwise it returns null.
short	getElementID() getElementID returns the Element Symbol ID for this pattern if there is one, otherwise it returns a negative value.
java.lang.String	getElementName() getElementName returns the Element Name for this pattern if there is one, otherwise it returns null.
int	getMatchLevel(IndexPattern p) getMatchLevel compares this IndexPattern to p and returns the strength of the match betwen the two patterns from 0 to 15.
int	hashCode()
void	read(java.io.DataInputStream dis) read reads the object state from the stream.
void	write(java.io.DataOutputStream dos) write writes the object state to the stream.

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

PATTERN_NONE

public static final int PATTERN_NONE

PATTERN_WILDCARD

public static final int PATTERN_WILDCARD

PATTERN_NAME

public static final int PATTERN_NAME

SCORE_NONE

public static final int SCORE_NONE

SCORE_WILDCARD

public static final int SCORE_WILDCARD

SCORE_NAME

public static final int SCORE_NAME

SCORE_NATURAL

public static final int SCORE_NATURAL

Constructor Detail

IndexPattern

public IndexPattern(SymbolTable symbols,
                    java.lang.String pattern,
                    NamespaceMap nsMap)

IndexPattern

public IndexPattern(SymbolTable symbols,
                    short elemID)

IndexPattern

public IndexPattern(SymbolTable symbols,
                    short elemID,
                    short attrID)

IndexPattern

public IndexPattern(SymbolTable symbols,
                    short elemID,
                    java.lang.String attrName)

Method Detail

getMatchLevel

public int getMatchLevel(IndexPattern p)

getMatchLevel compares this IndexPattern to p and returns the strength of the match betwen the two patterns from 0 to 15. (0 being no match at all, 15 being perfect). This method should be called by XPath and SAX patterns to be matched against Indexer patterns.

Parameters:

p - The pattern to compare

Returns:

The resulting IndexPattern strength

getElementID

public short getElementID()

getElementID returns the Element Symbol ID for this pattern if there is one, otherwise it returns a negative value.

Returns:

The Element Symbol ID

getAttributeID

public short getAttributeID()

getAttributeID returns the Attribute Symbol ID for this pattern if there is one, otherwise it returns a negative value.

Returns:

The Attribute Symbol ID

getElementName

public java.lang.String getElementName()

getElementName returns the Element Name for this pattern if there is one, otherwise it returns null.

Returns:

The Element Name

getAttributeName

public java.lang.String getAttributeName()

getAttributeName returns the Attribute Name for this pattern if there is one, otherwise it returns null.

Returns:

The Attribute Name

read

public void read(java.io.DataInputStream dis)
          throws java.io.IOException

Description copied from interface: Streamable

read reads the object state from the stream.

Specified by:

read in interface Streamable

Following copied from interface: org.apache.xindice.core.filer.Streamable

Parameters:

is - The DataInputStream

Throws:

java.io.IOException - if an IOException occurs

write

public void write(java.io.DataOutputStream dos)
           throws java.io.IOException

Description copied from interface: Streamable

write writes the object state to the stream.

Specified by:

write in interface Streamable

Following copied from interface: org.apache.xindice.core.filer.Streamable

Parameters:

os - The DataOutputStream

Throws:

java.io.IOException - if an IOException occurs

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object