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/* Copyright 2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at\\
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.xmlbeans;
import org.w3c.dom.Node;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.ext.LexicalHandler;
import javax.xml.stream.XMLStreamReader;
import java.io.*;
/**
* Represents a holder of XML that can return an {@link XmlCursor}
* or copy itself to various media such as
* {@link Writer Writers} or {@link File Files}.
* Both {@link XmlObject}
* (and thus all XML Beans) and {@link XmlCursor} are
* XmlTokenSource implementations.
*
* @see XmlObject
* @see XmlCursor
*/
public interface XmlTokenSource {
/**
* Returns the synchronization object for the document. If concurrent
* multithreaded access to a document is required, the access should should
* be protected by synchronizing on this monitor() object. There is one
* monitor per XML document tree.
*/
Object monitor();
/**
* Returns the XmlDocumentProperties object for the document this token
* source is associated with.
*/
XmlDocumentProperties documentProperties();
/**
* Returns a new XML cursor.
*
* A cursor provides random access to all the tokens in the XML
* data, plus the ability to extract strongly-typed XmlObjects
* for the data. If the data is not read-only, the XML cursor
* also allows modifications to the data.
*
* Using a cursor for the first time typically forces the XML
* document into memory.
*/
XmlCursor newCursor();
/**
* Returns a new XMLStreamReader.
*
* The stream starts at the current begin-tag or begin-document
* position and ends at the matching end-tag or end-document.
*
* This is a fail-fast stream, so if the underlying data is changed
* while the stream is being read, the stream throws a
* ConcurrentModificationException.
*/
XMLStreamReader newXMLStreamReader();
/**
* Returns standard XML text.
*
* The text returned represents the document contents starting at
* the current begin-tag or begin-document and ending at the matching
* end-tag or end-document. This is same content as newReader, but
* it is returned as a single string.
*
* Throws an IllegalStateException if the XmlTokenSource is not
* positioned at begin-tag or begin-document (e.g., if it is at
* an attribute).
*
* Note that this method does not produce XML with the XML declaration,
* including the encoding information. To save the XML declaration with
* the XML, see {@link #save(OutputStream)} or {@link #save(OutputStream, XmlOptions)}.
*/
String xmlText();
/**
* Returns a new stream containing standard XML text, encoded
* according to the given encoding.
*
* The byte stream contains contents starting at the current
* begin-tag or begin-document and ending at the matching
* end-tag or end-document. The specified encoding is used
* and also emitted in a PI at the beginning of the stream.
*
* This is a fail-fast stream, so if the underlying data is changed
* while the stream is being read, the stream throws a
* ConcurrentModificationException.
*
* Throws an IllegalStateException if the XmlTokenSource is not
* positioned at begin-tag or begin-document (e.g., if it is at
* an attribute).
*/
InputStream newInputStream();
/**
* Returns a new character reader containing XML text.
*
* The contents of the reader represents the document contents
* starting at the current begin-tag or begin-document and ending at
* the matching end-tag or end-document. No encoding annotation
* will be made in the text itself.
*
* This is a fail-fast reader, so if the underlying data is changed
* while the reader is being read, the reader throws a
* ConcurrentModificationException.
*
* Throws an IllegalStateException if the XmlTokenSource is not
* positioned at begin-tag or begin-document (e.g., if it is at
* an attribute).
*/
Reader newReader();
/**
* Returns a W3C DOM Node containing the XML
* represented by this source. This is a copy of the XML, it is
* not a live with the underlying store of this token source.
* If this is the document node, then a Document is returned, else
* a DocumentFragment is returned.
*/
Node newDomNode();
/**
* Returns a W3C DOM Node containing the XML represented by this source.
* This is a live DOM node, not a copy. Any changes made through this node
* are immediately reflected in the document associated with this token
* source. Depending on the kind of token this XmlTokenSource represents,
* an appropriate node will be returned.
*/
Node getDomNode();
/**
* Writes the XML represented by this source to the given SAX content and
* lexical handlers.
* Note that this method does not save the XML declaration, including the encoding information.
* To save the XML declaration with the XML, see {@link #save(OutputStream)},
* {@link #save(OutputStream, XmlOptions)}, {@link #save(File)} or {@link #save(File, XmlOptions)}.
*/
void save(ContentHandler ch, LexicalHandler lh) throws SAXException;
/**
* Writes the XML represented by this source to the given File.
* This method will save the XML declaration, including encoding information,
* with the XML.
*/
void save(File file) throws IOException;
/**
* Writes the XML represented by this source to the given output stream.
* This method will save the XML declaration, including encoding information,
* with the XML.
*/
void save(OutputStream os) throws IOException;
/**
* Writes the XML represented by this source to the given output.
* Note that this method does not save the XML declaration, including the encoding information.
* To save the XML declaration with the XML, see {@link #save(OutputStream)},
* {@link #save(OutputStream, XmlOptions)}, {@link #save(File)} or {@link #save(File, XmlOptions)}.
*/
void save(Writer w) throws IOException;
/**
* Returns a new XMLStreamReader.
*
* The stream starts at the current begin-tag or begin-document
* position and ends at the matching end-tag or end-document.
*
* This is a fail-fast stream, so if the underlying data is changed
* while the stream is being read, the stream throws a
* ConcurrentModificationException.
*
* Throws an IllegalStateException if the XmlTokenSource is not
* positioned at begin-tag or begin-document (e.g., if it is at
* an attribute).
*
*
* Method overview
* To specify this Use this method
* The character encoding to use when converting the character
* data in the XML to bytess.
* {@link XmlOptions#setCharacterEncoding}
*
*
* Prefix-to-namespace mappings that should be assumed
* when saving this XML. This is useful when the resulting
* XML will be part of a larger XML document, ensuring that this
* inner document will take advantage of namespaces defined in
* the outer document.
* {@link XmlOptions#setSaveImplicitNamespaces}
*
*
* Suggested namespace prefixes to use when saving. Used only
* when a namespace attribute needs to be synthesized.
* {@link XmlOptions#setSaveSuggestedPrefixes}
*
*
* That namespace attributes should occur first in elements when
* the XML is saved. By default, they occur last.
* {@link XmlOptions#setSaveNamespacesFirst}
*
*
* The XML should be pretty printed when saved. Note that this
* should only be used for debugging.
* {@link XmlOptions#setSavePrettyPrint}
*
*
* The number of spaces to use when indenting for pretty printing.
* The default is 2.
* {@link XmlOptions#setSavePrettyPrintIndent}
*
*
* The additional number of spaces indented from the left
* for pretty printed XML.
* {@link XmlOptions#setSavePrettyPrintOffset}
*
*
* To minimize the number of namespace attributes generated for the
* saved XML. Note that this can reduce performance significantly.
* {@link XmlOptions#setSaveAggressiveNamespaces}
*
*
* To reduce the size of the saved document
* by allowing the use of the default namespace. Note that this can
* potentially change the semantic meaning of the XML if unprefixed QNames are
* present as the value of an attribute or element.
* {@link XmlOptions#setUseDefaultNamespace}
*
*
* To filter out processing instructions with the specified target name.
* {@link XmlOptions#setSaveFilterProcinst}
*
*
* Change the QName of the synthesized root element when saving. This
* replaces "xml-fragment" with "fragment" in the namespace
* http://www.openuri.org/fragment
* {@link XmlOptions#setSaveUseOpenFrag}
*
*
* Saving should begin on the element's contents.
* {@link XmlOptions#setSaveInner}
*
*
* Saving should begin on the element, rather than its contents.
* {@link XmlOptions#setSaveOuter}
*
*
* To rename the document element, or to specify the document element
* for this XML.
* {@link XmlOptions#setSaveSyntheticDocumentElement}
*
*
*
* @param options Any of the described options. Options map may be null.
* @return A new validating XMLStreamReader.
* @see XmlOptions
*/
XMLStreamReader newXMLStreamReader(XmlOptions options);
/**
* Just like xmlText() but with options.
* Options map may be null.
*
* Note that this method does not produce XML with the XML declaration,
* including the encoding information. To save the XML declaration with
* the XML, see {@link #save(OutputStream)} or {@link #save(OutputStream, XmlOptions)}.
*
* @see XmlOptions
*/
String xmlText(XmlOptions options);
/**
* Just like newInputStream(String encoding) but with options.
* Options map may be null.
*
* @see XmlOptions
*/
InputStream newInputStream(XmlOptions options);
/**
* Just like newReader() but with options.
* Options map may be null.
*
* @see XmlOptions
*/
Reader newReader(XmlOptions options);
/**
* Just like newDomNode() but with options.
* Options map may be null.
*
* @see XmlOptions
*/
Node newDomNode(XmlOptions options);
/**
* Writes the XML represented by this source to the given SAX content and
* lexical handlers.
* Note that this method does not save the XML declaration, including the encoding information.
* To save the XML declaration with the XML, see {@link #save(OutputStream)},
* {@link #save(OutputStream, XmlOptions)}, {@link #save(File)} or {@link #save(File, XmlOptions)}.
*/
void save(ContentHandler ch, LexicalHandler lh, XmlOptions options) throws SAXException;
/**
* Writes the XML represented by this source to the given File.
* This method will save the XML declaration, including encoding information,
* with the XML.
*/
void save(File file, XmlOptions options) throws IOException;
/**
* Writes the XML represented by this source to the given output stream.
* This method will save the XML declaration, including encoding information,
* with the XML.
*/
void save(OutputStream os, XmlOptions options) throws IOException;
/**
* Writes the XML represented by this source to the given output.
* Note that this method does not save the XML declaration, including the encoding information.
* To save the XML declaration with the XML, see {@link #save(OutputStream)},
* {@link #save(OutputStream, XmlOptions)}, {@link #save(File)} or {@link #save(File, XmlOptions)}.
*/
void save(Writer w, XmlOptions options) throws IOException;
/**
* Prints to stdout the state of the document in which this token source is positioned.
* This is very implementation specific and may change at any time. Dump can be useful
* for debugging purposes. It is very different from the save methods which produce
* XML text which only approximates the actual state of the document.
*/
void dump();
}