org.apache.xerces.dom
Class DOMInputImpl

java.lang.Object
  |
  +--org.apache.xerces.dom.DOMInputImpl

All Implemented Interfaces:

org.w3c.dom.ls.LSInput

public class DOMInputImpl

extends java.lang.Object

implements org.w3c.dom.ls.LSInput

This Class DOMInputImpl represents a single input source for an XML entity.

This Class allows an application to encapsulate information about an input source in a single object, which may include a public identifier, a system identifier, a byte stream (possibly with a specified encoding), and/or a character stream.

The exact definitions of a byte stream and a character stream are binding dependent.

There are two places that the application will deliver this input source to the parser: as the argument to the parse method, or as the return value of the DOMResourceResolver.resolveEntity method.

The DOMParser will use the LSInput object to determine how to read XML input. If there is a character stream available, the parser will read that stream directly; if not, the parser will use a byte stream, if available; if neither a character stream nor a byte stream is available, the parser will attempt to open a URI connection to the resource identified by the system identifier.

An LSInput object belongs to the application: the parser shall never modify it in any way (it may modify a copy if necessary). Eventhough all attributes in this interface are writable the DOM implementation is expected to never mutate a LSInput.

See also the Document Object Model (DOM) Level 3 Abstract Schemas and Load and Save Specification.

INTERNAL:

Usage of this class is not supported. It may be altered or removed at any time.

Version:

$Id: DOMInputImpl.java,v 1.4 2004/10/05 17:12:50 mrglavas Exp $

Author:

Gopal Sharma, SUN Microsystems Inc.

Field Summary

protected java.lang.String	fBaseSystemId
protected java.io.InputStream	fByteStream
protected boolean	fCertifiedText
protected java.io.Reader	fCharStream
protected java.lang.String	fData
protected java.lang.String	fEncoding
protected java.lang.String	fPublicId
protected java.lang.String	fSystemId

Constructor Summary

DOMInputImpl()
Default Constructor, constructs an input source

DOMInputImpl(java.lang.String publicId, java.lang.String systemId, java.lang.String baseSystemId)
Constructs an input source from just the public and system identifiers, leaving resolution of the entity and opening of the input stream up to the caller.

DOMInputImpl(java.lang.String publicId, java.lang.String systemId, java.lang.String baseSystemId, java.io.InputStream byteStream, java.lang.String encoding)
Constructs an input source from a byte stream.

DOMInputImpl(java.lang.String publicId, java.lang.String systemId, java.lang.String baseSystemId, java.io.Reader charStream, java.lang.String encoding)
Constructs an input source from a character stream.

DOMInputImpl(java.lang.String publicId, java.lang.String systemId, java.lang.String baseSystemId, java.lang.String data, java.lang.String encoding)
Constructs an input source from a String.

Method Summary

java.lang.String	getBaseURI() The base URI to be used (see section 5.1.4 in ) for resolving relative URIs to absolute URIs.
java.io.InputStream	getByteStream() An attribute of a language-binding dependent type that represents a stream of bytes.
boolean	getCertifiedText() If set to true, assume that the input is certified (see section 2.13 in [XML 1.1]) when parsing [XML 1.1].
java.io.Reader	getCharacterStream() An attribute of a language-binding dependent type that represents a stream of 16-bit units.
java.lang.String	getEncoding() The character encoding, if known.
java.lang.String	getPublicId() The public identifier for this input source.
java.lang.String	getStringData() A string attribute that represents a sequence of 16 bit units (utf-16 encoded characters).
java.lang.String	getSystemId() The system identifier, a URI reference , for this input source.
void	setBaseURI(java.lang.String baseURI) The base URI to be used (see section 5.1.4 in ) for resolving relative URIs to absolute URIs.
void	setByteStream(java.io.InputStream byteStream) An attribute of a language-binding dependent type that represents a stream of bytes.
void	setCertifiedText(boolean certifiedText) If set to true, assume that the input is certified (see section 2.13 in [XML 1.1]) when parsing [XML 1.1].
void	setCharacterStream(java.io.Reader characterStream) An attribute of a language-binding dependent type that represents a stream of 16-bit units.
void	setEncoding(java.lang.String encoding) The character encoding, if known.
void	setPublicId(java.lang.String publicId) The public identifier for this input source.
void	setStringData(java.lang.String stringData) A string attribute that represents a sequence of 16 bit units (utf-16 encoded characters).
void	setSystemId(java.lang.String systemId) The system identifier, a URI reference , for this input source.

Methods inherited from class java.lang.Object

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

Field Detail

fPublicId

protected java.lang.String fPublicId

fSystemId

protected java.lang.String fSystemId

fBaseSystemId

protected java.lang.String fBaseSystemId

fByteStream

protected java.io.InputStream fByteStream

fCharStream

protected java.io.Reader fCharStream

fData

protected java.lang.String fData

fEncoding

protected java.lang.String fEncoding

fCertifiedText

protected boolean fCertifiedText

Constructor Detail

DOMInputImpl

public DOMInputImpl()

Default Constructor, constructs an input source

DOMInputImpl

public DOMInputImpl(java.lang.String publicId,
                    java.lang.String systemId,
                    java.lang.String baseSystemId)

Constructs an input source from just the public and system identifiers, leaving resolution of the entity and opening of the input stream up to the caller.

Parameters:

publicId - The public identifier, if known.

systemId - The system identifier. This value should always be set, if possible, and can be relative or absolute. If the system identifier is relative, then the base system identifier should be set.

baseSystemId - The base system identifier. This value should always be set to the fully expanded URI of the base system identifier, if possible.

DOMInputImpl

public DOMInputImpl(java.lang.String publicId,
                    java.lang.String systemId,
                    java.lang.String baseSystemId,
                    java.io.InputStream byteStream,
                    java.lang.String encoding)

Constructs an input source from a byte stream.

Parameters:

publicId - The public identifier, if known.

systemId - The system identifier. This value should always be set, if possible, and can be relative or absolute. If the system identifier is relative, then the base system identifier should be set.

baseSystemId - The base system identifier. This value should always be set to the fully expanded URI of the base system identifier, if possible.

byteStream - The byte stream.

encoding - The encoding of the byte stream, if known.

DOMInputImpl

public DOMInputImpl(java.lang.String publicId,
                    java.lang.String systemId,
                    java.lang.String baseSystemId,
                    java.io.Reader charStream,
                    java.lang.String encoding)

Constructs an input source from a character stream.

Parameters:

publicId - The public identifier, if known.

systemId - The system identifier. This value should always be set, if possible, and can be relative or absolute. If the system identifier is relative, then the base system identifier should be set.

baseSystemId - The base system identifier. This value should always be set to the fully expanded URI of the base system identifier, if possible.

charStream - The character stream.

encoding - The original encoding of the byte stream used by the reader, if known.

DOMInputImpl

public DOMInputImpl(java.lang.String publicId,
                    java.lang.String systemId,
                    java.lang.String baseSystemId,
                    java.lang.String data,
                    java.lang.String encoding)

Constructs an input source from a String.

Parameters:

publicId - The public identifier, if known.

systemId - The system identifier. This value should always be set, if possible, and can be relative or absolute. If the system identifier is relative, then the base system identifier should be set.

baseSystemId - The base system identifier. This value should always be set to the fully expanded URI of the base system identifier, if possible.

data - The String Data.

encoding - The original encoding of the byte stream used by the reader, if known.

Method Detail

getByteStream

public java.io.InputStream getByteStream()

An attribute of a language-binding dependent type that represents a stream of bytes.
The parser will ignore this if there is also a character stream specified, but it will use a byte stream in preference to opening a URI connection itself.
If the application knows the character encoding of the byte stream, it should set the encoding property. Setting the encoding in this way will override any encoding specified in the XML declaration itself.

Specified by:

getByteStream in interface org.w3c.dom.ls.LSInput

setByteStream

public void setByteStream(java.io.InputStream byteStream)

An attribute of a language-binding dependent type that represents a stream of bytes.
The parser will ignore this if there is also a character stream specified, but it will use a byte stream in preference to opening a URI connection itself.
If the application knows the character encoding of the byte stream, it should set the encoding property. Setting the encoding in this way will override any encoding specified in the XML declaration itself.

Specified by:

setByteStream in interface org.w3c.dom.ls.LSInput

getCharacterStream

public java.io.Reader getCharacterStream()

An attribute of a language-binding dependent type that represents a stream of 16-bit units. Application must encode the stream using UTF-16 (defined in and Amendment 1 of ).
If a character stream is specified, the parser will ignore any byte stream and will not attempt to open a URI connection to the system identifier.

Specified by:

getCharacterStream in interface org.w3c.dom.ls.LSInput

setCharacterStream

public void setCharacterStream(java.io.Reader characterStream)

An attribute of a language-binding dependent type that represents a stream of 16-bit units. Application must encode the stream using UTF-16 (defined in and Amendment 1 of ).
If a character stream is specified, the parser will ignore any byte stream and will not attempt to open a URI connection to the system identifier.

Specified by:

setCharacterStream in interface org.w3c.dom.ls.LSInput

getStringData

public java.lang.String getStringData()

A string attribute that represents a sequence of 16 bit units (utf-16 encoded characters).
If string data is available in the input source, the parser will ignore the character stream and the byte stream and will not attempt to open a URI connection to the system identifier.

Specified by:

getStringData in interface org.w3c.dom.ls.LSInput

setStringData

public void setStringData(java.lang.String stringData)

A string attribute that represents a sequence of 16 bit units (utf-16 encoded characters).
If string data is available in the input source, the parser will ignore the character stream and the byte stream and will not attempt to open a URI connection to the system identifier.

Specified by:

setStringData in interface org.w3c.dom.ls.LSInput

getEncoding

public java.lang.String getEncoding()

The character encoding, if known. The encoding must be a string acceptable for an XML encoding declaration ( section 4.3.3 "Character Encoding in Entities").
This attribute has no effect when the application provides a character stream. For other sources of input, an encoding specified by means of this attribute will override any encoding specified in the XML claration or the Text Declaration, or an encoding obtained from a higher level protocol, such as HTTP .

Specified by:

getEncoding in interface org.w3c.dom.ls.LSInput

setEncoding

public void setEncoding(java.lang.String encoding)

The character encoding, if known. The encoding must be a string acceptable for an XML encoding declaration ( section 4.3.3 "Character Encoding in Entities").
This attribute has no effect when the application provides a character stream. For other sources of input, an encoding specified by means of this attribute will override any encoding specified in the XML claration or the Text Declaration, or an encoding obtained from a higher level protocol, such as HTTP .

Specified by:

setEncoding in interface org.w3c.dom.ls.LSInput

getPublicId

public java.lang.String getPublicId()

The public identifier for this input source. The public identifier is always optional: if the application writer includes one, it will be provided as part of the location information.

Specified by:

getPublicId in interface org.w3c.dom.ls.LSInput

setPublicId

public void setPublicId(java.lang.String publicId)

The public identifier for this input source. The public identifier is always optional: if the application writer includes one, it will be provided as part of the location information.

Specified by:

setPublicId in interface org.w3c.dom.ls.LSInput

getSystemId

public java.lang.String getSystemId()

The system identifier, a URI reference , for this input source. The system identifier is optional if there is a byte stream or a character stream, but it is still useful to provide one, since the application can use it to resolve relative URIs and can include it in error messages and warnings (the parser will attempt to fetch the ressource identifier by the URI reference only if there is no byte stream or character stream specified).
If the application knows the character encoding of the object pointed to by the system identifier, it can register the encoding by setting the encoding attribute.
If the system ID is a relative URI reference (see section 5 in ), the behavior is implementation dependent.

Specified by:

getSystemId in interface org.w3c.dom.ls.LSInput

setSystemId

public void setSystemId(java.lang.String systemId)

The system identifier, a URI reference , for this input source. The system identifier is optional if there is a byte stream or a character stream, but it is still useful to provide one, since the application can use it to resolve relative URIs and can include it in error messages and warnings (the parser will attempt to fetch the ressource identifier by the URI reference only if there is no byte stream or character stream specified).
If the application knows the character encoding of the object pointed to by the system identifier, it can register the encoding by setting the encoding attribute.
If the system ID is a relative URI reference (see section 5 in ), the behavior is implementation dependent.

Specified by:

setSystemId in interface org.w3c.dom.ls.LSInput

getBaseURI

public java.lang.String getBaseURI()

The base URI to be used (see section 5.1.4 in ) for resolving relative URIs to absolute URIs. If the baseURI is itself a relative URI, the behavior is implementation dependent.

Specified by:

getBaseURI in interface org.w3c.dom.ls.LSInput

setBaseURI

public void setBaseURI(java.lang.String baseURI)

The base URI to be used (see section 5.1.4 in ) for resolving relative URIs to absolute URIs. If the baseURI is itself a relative URI, the behavior is implementation dependent.

Specified by:

setBaseURI in interface org.w3c.dom.ls.LSInput

getCertifiedText

public boolean getCertifiedText()

If set to true, assume that the input is certified (see section 2.13 in [XML 1.1]) when parsing [XML 1.1].

Specified by:

getCertifiedText in interface org.w3c.dom.ls.LSInput

setCertifiedText

public void setCertifiedText(boolean certifiedText)

If set to true, assume that the input is certified (see section 2.13 in [XML 1.1]) when parsing [XML 1.1].

Specified by:

setCertifiedText in interface org.w3c.dom.ls.LSInput