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Java API for XML Processing Reference Implementation
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package com.sun.org.apache.xerces.internal.impl.xs.opti;
import org.w3c.dom.DOMException;
import org.w3c.dom.Node;
/**
* @xerces.internal
*
* @author Neil Graham, IBM
* @version $Id: TextImpl.java,v 1.6 2010-11-01 04:40:01 joehw Exp $
*/
public class TextImpl extends DefaultText {
// Data
String fData = null;
SchemaDOM fSchemaDOM = null;
int fRow;
int fCol;
public TextImpl(StringBuffer str, SchemaDOM sDOM, int row, int col) {
fData = str.toString();
fSchemaDOM = sDOM;
fRow = row;
fCol = col;
rawname = prefix = localpart = uri = null;
nodeType = Node.TEXT_NODE;
}
//
// org.w3c.dom.Node methods
//
public Node getParentNode() {
return fSchemaDOM.relations[fRow][0];
}
public Node getPreviousSibling() {
if (fCol == 1) {
return null;
}
return fSchemaDOM.relations[fRow][fCol-1];
}
public Node getNextSibling() {
if (fCol == fSchemaDOM.relations[fRow].length-1) {
return null;
}
return fSchemaDOM.relations[fRow][fCol+1];
}
// CharacterData methods
/**
* The character data of the node that implements this interface. The DOM
* implementation may not put arbitrary limits on the amount of data
* that may be stored in a CharacterData node. However,
* implementation limits may mean that the entirety of a node's data may
* not fit into a single DOMString. In such cases, the user
* may call substringData to retrieve the data in
* appropriately sized pieces.
* @exception DOMException
* NO_MODIFICATION_ALLOWED_ERR: Raised when the node is readonly.
* @exception DOMException
* DOMSTRING_SIZE_ERR: Raised when it would return more characters than
* fit in a DOMString variable on the implementation
* platform.
*/
public String getData()
throws DOMException {
return fData;
}
/**
* The number of 16-bit units that are available through data
* and the substringData method below. This may have the
* value zero, i.e., CharacterData nodes may be empty.
*/
public int getLength() {
if(fData == null) return 0;
return fData.length();
}
/**
* Extracts a range of data from the node.
* @param offset Start offset of substring to extract.
* @param count The number of 16-bit units to extract.
* @return The specified substring. If the sum of offset and
* count exceeds the length, then all 16-bit
* units to the end of the data are returned.
* @exception DOMException
* INDEX_SIZE_ERR: Raised if the specified offset is
* negative or greater than the number of 16-bit units in
* data, or if the specified count is
* negative.
*
DOMSTRING_SIZE_ERR: Raised if the specified range of text does
* not fit into a DOMString.
*/
public String substringData(int offset,
int count)
throws DOMException {
if(fData == null) return null;
if(count < 0 || offset < 0 || offset > fData.length())
throw new DOMException(DOMException.INDEX_SIZE_ERR, "parameter error");
if(offset+count >= fData.length())
return fData.substring(offset);
return fData.substring(offset, offset+count);
}
}