## com.icl.saxon.om
Class NamePool

    java.lang.Object
      com.icl.saxon.om.NamePool

public class NamePool
extends java.lang.Object

An object representing a collection of XML names, each containing a Namespace URI, a Namespace prefix, and a local name; plus a collection of namespaces, each consisting of a prefix/URI pair.

The equivalence betweem names depends only on the URI and the local name. The prefix is retained for documentary purposes only: it is useful when reconstructing a document to use prefixes that the user is familiar with.

The NamePool eliminates duplicate names if they have the same prefix, uri, and local part. It retains duplicates if they have different prefixes

Constructor Summary
`NamePool()`

Method Summary
`int` `allocate(java.lang.String prefix, short uriCode, java.lang.String localName)` Allocate a name from the pool, or a new Name if there is not a matching one there
`int` `allocate(java.lang.String prefix, java.lang.String uri, java.lang.String localName)` Allocate a name from the pool, or a new Name if there is not a matching one there
`short` `allocateCodeForPrefix(java.lang.String prefix)` Allocate the prefix code for a given Prefix; create one if not found
`short` `allocateCodeForURI(java.lang.String uri)` Allocate the uri code for a given URI; create one if not found, unless the namepool is sealed
`int` `allocateNamespaceCode(int namecode)` Allocate a namespace code for the prefix/URI of a given namecode
`int` `allocateNamespaceCode(java.lang.String prefix, java.lang.String uri)` Allocate the namespace code for a namespace prefix/URI pair.
`void` `diagnosticDump()` Diagnostic print of the namepool contents
`void` `generateJavaConstants()` The following code is used to create a list of Java declarations for the fingerprints of standard names used in a stylesheet.
`short` `getCodeForPrefix(java.lang.String prefix)` Get the prefix code for a given Prefix
`short` `getCodeForURI(java.lang.String uri)` Get the uri code for a given URI
`static NamePool` `getDefaultNamePool()` Get the singular default NamePool
`java.lang.String` `getDisplayName(int nameCode)` Get the display form of a name (the QName), given its name code or fingerprint
`int` `getFingerprint(int nameCode)` Get a fingerprint for the name with a given name code.
`int` `getFingerprint(java.lang.String uri, java.lang.String localName)` Get a fingerprint for the name with a given uri and local name.
`java.lang.String` `getLocalName(int nameCode)` Get the local part of a name, given its name code or fingerprint
`int` `getNamespaceCode(int namecode)` Get a namespace code for the prefix/URI of a given namecode
`int` `getNamespaceCode(java.lang.String prefix, java.lang.String uri)` Get the existing namespace code for a namespace prefix/URI pair.
`java.lang.String` `getPrefix(int nameCode)` Get the prefix part of a name, given its name code or fingerprint
`java.lang.String` `getPrefixFromNamespaceCode(int code)` Get the namespace prefix from a namespace code
`int` `getPrefixIndex(short uriCode, java.lang.String prefix)` Get the index of a prefix among all the prefixes used with a given URI
`java.lang.String` `getPrefixWithIndex(short uriCode, int index)` Get a prefix among all the prefixes used with a given URI, given its index
`StandardNames` `getStandardNames()` Get the standard names
`java.lang.String` `getURI(int nameCode)` Get the namespace-URI of a name, given its name code or fingerprint
`short` `getURICode(int nameCode)` Get the URI code of a name, given its name code or fingerprint
`java.lang.String` `getURIFromNamespaceCode(int code)` Get the namespace URI from a namespace code
`java.lang.String` `getURIFromURICode(short code)` Get the namespace URI from a URI code
`boolean` `hasSignature(java.lang.Object sig)` Test whether the namepool contains names defined in a particular Stylesheet
`void` `importPool(NamePool other)` Import the names defined in another namepool (typically the one used to create the stylesheet: these names are imported into the namepool used to build the source document).
`boolean` `isSealed()` Determine whether the namepool is sealed
`void` `loadStandardNames()` Load the standard names that have a special meaning to XSLT
`void` `setStylesheetSignature(java.lang.Object sig)` Mark the NamePool to indicate that it contains names defined in a particular stylesheet

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### NamePool

    public NamePool()

Method Detail

### getDefaultNamePool

    public static NamePool getDefaultNamePool()

  Get the singular default NamePool

### loadStandardNames

    public void loadStandardNames()

  Load the standard names that have a special meaning to XSLT

### getStandardNames

    public StandardNames getStandardNames()

  Get the standard names

### setStylesheetSignature

    public void setStylesheetSignature(java.lang.Object sig)

  Mark the NamePool to indicate that it contains names defined in a particular stylesheet

### hasSignature

    public boolean hasSignature(java.lang.Object sig)

  Test whether the namepool contains names defined in a particular Stylesheet

### importPool

    public void importPool(NamePool other)
                    throws TransformerException

  Import the names defined in another namepool (typically the one used to create the stylesheet: these names are imported into the namepool used to build the source document). No longer used unless name pools are managed manually

  Throws:
    `TransformerException`

### isSealed

    public boolean isSealed()

  Determine whether the namepool is sealed

### allocateNamespaceCode

    public int allocateNamespaceCode(java.lang.String prefix,
                                     java.lang.String uri)

  Allocate the namespace code for a namespace prefix/URI pair. Create it if not already present

### getNamespaceCode

    public int getNamespaceCode(java.lang.String prefix,
                                java.lang.String uri)

  Get the existing namespace code for a namespace prefix/URI pair.

  Returns:
    -1 if there is none present

### allocateCodeForURI

    public short allocateCodeForURI(java.lang.String uri)

  Allocate the uri code for a given URI; create one if not found, unless the namepool is sealed

### getCodeForURI

    public short getCodeForURI(java.lang.String uri)

  Get the uri code for a given URI

  Returns:
    -1 if not present in the name pool

### allocateCodeForPrefix

    public short allocateCodeForPrefix(java.lang.String prefix)

  Allocate the prefix code for a given Prefix; create one if not found

### getCodeForPrefix

    public short getCodeForPrefix(java.lang.String prefix)

  Get the prefix code for a given Prefix

  Returns:
    -1 if not found

### getPrefixIndex

    public int getPrefixIndex(short uriCode,
                              java.lang.String prefix)

  Get the index of a prefix among all the prefixes used with a given URI

  Returns:
    -1 if not found

### getPrefixWithIndex

    public java.lang.String getPrefixWithIndex(short uriCode,
                                               int index)

  Get a prefix among all the prefixes used with a given URI, given its index

  Returns:
    null if not found

### allocate

    public int allocate(java.lang.String prefix,
                        java.lang.String uri,
                        java.lang.String localName)

  Allocate a name from the pool, or a new Name if there is not a matching one there

  Parameters:
    `prefix` -
    `uri` - - the namespace URI
    `localName` -
  Returns:
    an integer (the "namecode") identifying the name within the namepool. The Name itself may be retrieved using the getName(int) method

### allocate

    public int allocate(java.lang.String prefix,
                        short uriCode,
                        java.lang.String localName)

  Allocate a name from the pool, or a new Name if there is not a matching one there

  Parameters:
    `prefix` -
    `uriCode` - - the code of the URI
    `localName` -
  Returns:
    an integer (the "namecode") identifying the name within the namepool.

### allocateNamespaceCode

    public int allocateNamespaceCode(int namecode)

  Allocate a namespace code for the prefix/URI of a given namecode

### getNamespaceCode

    public int getNamespaceCode(int namecode)

  Get a namespace code for the prefix/URI of a given namecode

### getURI

    public java.lang.String getURI(int nameCode)

  Get the namespace-URI of a name, given its name code or fingerprint

### getURICode

    public short getURICode(int nameCode)

  Get the URI code of a name, given its name code or fingerprint

### getLocalName

    public java.lang.String getLocalName(int nameCode)

  Get the local part of a name, given its name code or fingerprint

### getPrefix

    public java.lang.String getPrefix(int nameCode)

  Get the prefix part of a name, given its name code or fingerprint

### getDisplayName

    public java.lang.String getDisplayName(int nameCode)

  Get the display form of a name (the QName), given its name code or fingerprint

### getFingerprint

    public int getFingerprint(int nameCode)

  Get a fingerprint for the name with a given name code. The signature has the property that if two signatures are the same, the names are the same (ie. same local name and same URI)

### getFingerprint

    public int getFingerprint(java.lang.String uri,
                              java.lang.String localName)

  Get a fingerprint for the name with a given uri and local name. These must be present in the NamePool. The signature has the property that if two signatures are the same, the names are the same (ie. same local name and same URI).

  Returns:
    -1 if not found

### getURIFromNamespaceCode

    public java.lang.String getURIFromNamespaceCode(int code)

  Get the namespace URI from a namespace code

### getURIFromURICode

    public java.lang.String getURIFromURICode(short code)

  Get the namespace URI from a URI code

### getPrefixFromNamespaceCode

    public java.lang.String getPrefixFromNamespaceCode(int code)

  Get the namespace prefix from a namespace code

### diagnosticDump

    public void diagnosticDump()

  Diagnostic print of the namepool contents

### generateJavaConstants

    public void generateJavaConstants()

  The following code is used to create a list of Java declarations for the fingerprints of standard names used in a stylesheet. This code is executed while building Saxon, to create the constant definitions appearing in the StandardNames module.