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## org.apache.xerces.dom
Class DOMInputSourceImpl

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

All Implemented Interfaces:
  org.w3c.dom.ls.DOMInputSource

public class DOMInputSourceImpl
extends java.lang.Object
implements org.w3c.dom.ls.DOMInputSource

This Class `DOMInputSourceImpl` 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 `DOMEntityResolver.resolveEntity` method.

The `DOMBuilder` will use the `DOMInputSource` 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 `DOMInputSource` 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 DOMInputSource.

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

Version:
  $Id: DOMInputSourceImpl.java,v 1.4 2002/08/09 15:18:14 neilg Exp $
Author:
  Gopal Sharma, SUN Microsystems Inc.

Field Summary
`protected java.lang.String` | `fBaseSystemId`
`protected java.io.InputStream` | `fByteStream`
`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
`DOMInputSourceImpl()` Default Constructor, constructs an input source
`DOMInputSourceImpl(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.
`DOMInputSourceImpl(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.
`DOMInputSourceImpl(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.
`DOMInputSourceImpl(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.
`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` | `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

Constructor Detail

### DOMInputSourceImpl

    public DOMInputSourceImpl()

  Default Constructor, constructs an input source

### DOMInputSourceImpl

    public DOMInputSourceImpl(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.

### DOMInputSourceImpl

    public DOMInputSourceImpl(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.

### DOMInputSourceImpl

    public DOMInputSourceImpl(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.

### DOMInputSourceImpl

    public DOMInputSourceImpl(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.DOMInputSource`

### 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.DOMInputSource`

### 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.DOMInputSource`

### 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.DOMInputSource`

### 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.DOMInputSource`

### 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.DOMInputSource`

### 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.DOMInputSource`

### 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.DOMInputSource`

### 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.DOMInputSource`

### 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.DOMInputSource`

### 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.DOMInputSource`

### 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.DOMInputSource`

### 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.DOMInputSource`

### 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.DOMInputSource`

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