Module org.postgresql.pljava.internal

Package org.postgresql.pljava.jdbc

Class PgNodeTreeAsXML

java.lang.Object

org.postgresql.pljava.internal.SyntheticXMLReader

org.postgresql.pljava.internal.ByteBufferXMLReader

org.postgresql.pljava.internal.VarlenaXMLRenderer

org.postgresql.pljava.jdbc.PgNodeTreeAsXML

All Implemented Interfaces:

Closeable, AutoCloseable, VarlenaWrapper, XMLReader

public class PgNodeTreeAsXML
extends VarlenaXMLRenderer

An adapter presenting PostgreSQL's pg_node_tree type (a serialized representation of a tree data structure) through the XML API (in, currently, an ad-hoc, schemaless rendering, but one with which some practical use might be made of the information, after a little study).

Nested Class Summary

Nested classes/interfaces inherited from class org.postgresql.pljava.internal.SyntheticXMLReader

SyntheticXMLReader.ApacheFeature, SyntheticXMLReader.EmptyAttributes2, SyntheticXMLReader.EventCarrier, SyntheticXMLReader.FluentAttributes2, SyntheticXMLReader.SAX2FEATURE, SyntheticXMLReader.SAX2PROPERTY

Nested classes/interfaces inherited from interface org.postgresql.pljava.internal.VarlenaWrapper

VarlenaWrapper.Input, VarlenaWrapper.Output, VarlenaWrapper.Verifier

Field Summary

Fields

Modifier and Type	Field	Description
static String	LBRA_TOK
static String	LPAR_TOK
static String	RBRA_TOK
static String	RPAR_TOK

Fields inherited from class org.postgresql.pljava.internal.VarlenaXMLRenderer

m_decoder

Fields inherited from class org.postgresql.pljava.internal.SyntheticXMLReader

m_attributes, NO_ATTRIBUTES

Method Summary

Modifier and Type	Method	Description
protected SyntheticXMLReader.EventCarrier	next(ByteBuffer buf)	Return null if no more events available, or an EventCarrier that carries one or more.

Methods inherited from class org.postgresql.pljava.internal.VarlenaXMLRenderer

adopt, buffer, close, pin, toString, toString, unpin

Methods inherited from class org.postgresql.pljava.internal.ByteBufferXMLReader

next, parse

Methods inherited from class org.postgresql.pljava.internal.SyntheticXMLReader

exceptionCarrier, getContentHandler, getDTDHandler, getEntityResolver, getErrorHandler, getFeature, getProperty, parse, parse, setContentHandler, setDTDHandler, setEntityResolver, setErrorHandler, setFeature, setProperty, sourceToReader, sysIdToInputStream, sysIdToReader

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

LPAR_TOK

public static final String LPAR_TOK

See Also:

Constant Field Values

RPAR_TOK

public static final String RPAR_TOK

See Also:

Constant Field Values

LBRA_TOK

public static final String LBRA_TOK

See Also:

Constant Field Values

RBRA_TOK

public static final String RBRA_TOK

See Also:

Constant Field Values

Method Detail

next

protected SyntheticXMLReader.EventCarrier next(ByteBuffer buf)

Description copied from class: ByteBufferXMLReader

Return null if no more events available, or an EventCarrier that carries one or more.

Start- and end-document events are supplied by the caller, and so should not be supplied here.

The pin on the underlying state is held.

Specified by:

next in class ByteBufferXMLReader

Parameters:

buf - The buffer to read from. Its position may be used to maintain input position.

Returns:

An SyntheticXMLReader.EventCarrier representing some XML parse events, null if none remain.