/**
* Constructs a new <code>XmlReaderContentHandler</code> object that will assist the SAX parser in
* reading a <code>WebRowSet</code> object in the format of an XML document. In addition to
* setting some default values, this constructor creates three <code>HashMap</code> objects, one
* for properties, one for metadata, and one for data. These hash maps map the strings sent by the
* SAX parser to integer constants so that they can be compared more efficiently in <code>switch
* </code> statements.
*
* @param r the <code>RowSet</code> object in XML format that will be read
*/
public XmlReaderContentHandler(RowSet r) {
// keep the rowset we've been given
rs = (WebRowSetImpl) r;
// set-up the token maps
initMaps();
// allocate the collection for the updates
updates = new Vector<>();
// start out with the empty string
columnValue = "";
propertyValue = "";
metaDataValue = "";
nullVal = false;
idx = 0;
tempStr = "";
tempUpdate = "";
tempCommand = "";
try {
resBundle = JdbcRowSetResourceBundle.getJdbcRowSetResourceBundle();
} catch (IOException ioe) {
throw new RuntimeException(ioe);
}
}
/**
* Sets a property, metadata, or data value with the characters in the given array of characters,
* starting with the array element indicated by <code>start</code> and continuing for <code>length
* </code> number of characters.
*
* <p>The SAX parser invokes this method and supplies the character array, start position, and
* length parameter values it got from parsing the XML document. An application programmer never
* invokes this method directly.
*
* @param ch an array of characters supplied by the SAX parser, all or part of which will be used
* to set a value
* @param start the position in the given array at which to start
* @param length the number of consecutive characters to use
*/
public void characters(char[] ch, int start, int length) throws SAXException {
try {
switch (getState()) {
case PROPERTIES:
propertyValue = new String(ch, start, length);
/**
* This has been added for handling of special characters. When special characters are
* encountered the characters function gets called for each of the characters so we need
* to append the value got in the previous call as it is the same data present between the
* start and the end tag.
*/
tempCommand = tempCommand.concat(propertyValue);
propertyValue = tempCommand;
// Added the following check for handling of type tags in maps
if (tag == PropTypeTag) {
Key_map = propertyValue;
}
// Added the following check for handling of class tags in maps
else if (tag == PropClassTag) {
Value_map = propertyValue;
}
break;
case METADATA:
// The parser will come here after the endElement as there is
// "\n" in the after endTag is printed. This will cause a problem
// when the data between the tags is an empty string so adding
// below condition to take care of that situation.
if (tag == -1) {
break;
}
metaDataValue = new String(ch, start, length);
break;
case DATA:
setDataValue(ch, start, length);
break;
default:;
}
} catch (SQLException ex) {
throw new SAXException(
resBundle.handleGetObject("xmlrch.chars").toString() + ex.getMessage());
}
}
private void applyUpdates() throws SAXException {
// now handle any updates
if (updates.size() > 0) {
try {
Object upd[];
Iterator<?> i = updates.iterator();
while (i.hasNext()) {
upd = (Object[]) i.next();
idx = ((Integer) upd[0]).intValue();
if (!(lastval.equals(upd[1]))) {
insertValue((String) (upd[1]));
}
}
rs.updateRow();
} catch (SQLException ex) {
throw new SAXException(
MessageFormat.format(
resBundle.handleGetObject("xmlrch.errupdrow").toString(), ex.getMessage()));
}
updates.removeAllElements();
}
}
private void setPropertyValue(String s) throws SQLException {
// find out if we are going to be dealing with a null
boolean nullValue = getNullValue();
switch (getTag()) {
case CommandTag:
if (nullValue) ; // rs.setCommand(null);
else rs.setCommand(s);
break;
case ConcurrencyTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue").toString());
else rs.setConcurrency(getIntegerValue(s));
break;
case DatasourceTag:
if (nullValue) rs.setDataSourceName(null);
else rs.setDataSourceName(s);
break;
case EscapeProcessingTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue").toString());
else rs.setEscapeProcessing(getBooleanValue(s));
break;
case FetchDirectionTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue").toString());
else rs.setFetchDirection(getIntegerValue(s));
break;
case FetchSizeTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue").toString());
else rs.setFetchSize(getIntegerValue(s));
break;
case IsolationLevelTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue").toString());
else rs.setTransactionIsolation(getIntegerValue(s));
break;
case KeycolsTag:
break;
case PropColumnTag:
if (keyCols == null) keyCols = new Vector<>();
keyCols.add(s);
break;
case MapTag:
break;
case MaxFieldSizeTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue").toString());
else rs.setMaxFieldSize(getIntegerValue(s));
break;
case MaxRowsTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue").toString());
else rs.setMaxRows(getIntegerValue(s));
break;
case QueryTimeoutTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue").toString());
else rs.setQueryTimeout(getIntegerValue(s));
break;
case ReadOnlyTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue").toString());
else rs.setReadOnly(getBooleanValue(s));
break;
case RowsetTypeTag:
if (nullValue) {
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue").toString());
} else {
// rs.setType(getIntegerValue(s));
String strType = getStringValue(s);
int iType = 0;
if (strType.trim().equals("ResultSet.TYPE_SCROLL_INSENSITIVE")) {
iType = 1004;
} else if (strType.trim().equals("ResultSet.TYPE_SCROLL_SENSITIVE")) {
iType = 1005;
} else if (strType.trim().equals("ResultSet.TYPE_FORWARD_ONLY")) {
iType = 1003;
}
rs.setType(iType);
}
break;
case ShowDeletedTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue").toString());
else rs.setShowDeleted(getBooleanValue(s));
break;
case TableNameTag:
if (nullValue)
// rs.setTableName(null);
;
else rs.setTableName(s);
break;
case UrlTag:
if (nullValue) rs.setUrl(null);
else rs.setUrl(s);
break;
case SyncProviderNameTag:
if (nullValue) {
rs.setSyncProvider(null);
} else {
String str = s.substring(0, s.indexOf("@") + 1);
rs.setSyncProvider(str);
}
break;
case SyncProviderVendorTag:
// to be implemented
break;
case SyncProviderVersionTag:
// to be implemented
break;
case SyncProviderGradeTag:
// to be implemented
break;
case DataSourceLock:
// to be implemented
break;
default:
break;
}
}
/**
* Sets the value for the given element if <code>name</code> is one of the array elements in the
* fields <code>properties</code>, <code>colDef</code>, or <code>data</code> and this <code>
* XmlReaderContentHandler</code> object's state is not <code>INITIAL</code>. If the state is
* <code>INITIAL</code>, this method does nothing.
*
* <p>If the state is <code>METADATA</code> and the argument supplied is <code>"metadata"</code>,
* the rowset's metadata is set. If the state is <code>PROPERTIES</code>, the appropriate property
* is set using the given name to determine the appropriate value. If the state is <code>DATA
* </code> and the argument supplied is <code>"data"</code>, this method sets the state to <code>
* INITIAL</code> and returns. If the argument supplied is one of the elements in the field <code>
* data</code>, this method makes the appropriate changes to the rowset's data.
*
* @param lName the name of the element; either (1) one of the array elements in the fields <code>
* properties</code>, <code>colDef</code>, or <code>data</code> or (2) one of the <code>RowSet
* </code> elements <code>"properties"</code>, <code>"metadata"</code>, or <code>"data"</code>
* @exception SAXException if a general SAX error occurs
*/
@SuppressWarnings("fallthrough")
public void endElement(String uri, String lName, String qName) throws SAXException {
int tag;
String name = "";
name = lName;
switch (getState()) {
case PROPERTIES:
if (name.equals("properties")) {
state = INITIAL;
break;
}
try {
tag = propMap.get(name);
switch (tag) {
case KeycolsTag:
if (keyCols != null) {
int i[] = new int[keyCols.size()];
for (int j = 0; j < i.length; j++) i[j] = Integer.parseInt(keyCols.elementAt(j));
rs.setKeyColumns(i);
}
break;
case PropClassTag:
// Added the handling for Class tags to take care of maps
// Makes an entry into the map upon end of class tag
try {
typeMap.put(Key_map, j86.sun.reflect.misc.ReflectUtil.forName(Value_map));
} catch (ClassNotFoundException ex) {
throw new SAXException(
MessageFormat.format(
resBundle.handleGetObject("xmlrch.errmap").toString(), ex.getMessage()));
}
break;
case MapTag:
// Added the handling for Map to take set the typeMap
rs.setTypeMap(typeMap);
break;
default:
break;
}
if (getNullValue()) {
setPropertyValue(null);
setNullValue(false);
} else {
setPropertyValue(propertyValue);
}
} catch (SQLException ex) {
throw new SAXException(ex.getMessage());
}
// propertyValue need to be reset to an empty string
propertyValue = "";
setTag(-1);
break;
case METADATA:
if (name.equals("metadata")) {
try {
rs.setMetaData(md);
state = INITIAL;
} catch (SQLException ex) {
throw new SAXException(
MessageFormat.format(
resBundle.handleGetObject("xmlrch.errmetadata").toString(), ex.getMessage()));
}
} else {
try {
if (getNullValue()) {
setMetaDataValue(null);
setNullValue(false);
} else {
setMetaDataValue(metaDataValue);
}
} catch (SQLException ex) {
throw new SAXException(
MessageFormat.format(
resBundle.handleGetObject("xmlrch.errmetadata").toString(), ex.getMessage()));
}
// metaDataValue needs to be reset to an empty string
metaDataValue = "";
}
setTag(-1);
break;
case DATA:
if (name.equals("data")) {
state = INITIAL;
return;
}
if (dataMap.get(name) == null) {
tag = NullTag;
} else {
tag = dataMap.get(name);
}
switch (tag) {
case ColTag:
try {
idx++;
if (getNullValue()) {
insertValue(null);
setNullValue(false);
} else {
insertValue(tempStr);
}
// columnValue now need to be reset to the empty string
columnValue = "";
} catch (SQLException ex) {
throw new SAXException(
MessageFormat.format(
resBundle.handleGetObject("xmlrch.errinsertval").toString(),
ex.getMessage()));
}
break;
case RowTag:
try {
rs.insertRow();
rs.moveToCurrentRow();
rs.next();
// Making this as the original to turn off the
// rowInserted flagging
rs.setOriginalRow();
applyUpdates();
} catch (SQLException ex) {
throw new SAXException(
MessageFormat.format(
resBundle.handleGetObject("xmlrch.errconstr").toString(), ex.getMessage()));
}
break;
case DelTag:
try {
rs.insertRow();
rs.moveToCurrentRow();
rs.next();
rs.setOriginalRow();
applyUpdates();
rs.deleteRow();
} catch (SQLException ex) {
throw new SAXException(
MessageFormat.format(
resBundle.handleGetObject("xmlrch.errdel").toString(), ex.getMessage()));
}
break;
case InsTag:
try {
rs.insertRow();
rs.moveToCurrentRow();
rs.next();
applyUpdates();
} catch (SQLException ex) {
throw new SAXException(
MessageFormat.format(
resBundle.handleGetObject("xmlrch.errinsert").toString(), ex.getMessage()));
}
break;
case InsDelTag:
try {
rs.insertRow();
rs.moveToCurrentRow();
rs.next();
rs.setOriginalRow();
applyUpdates();
} catch (SQLException ex) {
throw new SAXException(
MessageFormat.format(
resBundle.handleGetObject("xmlrch.errinsdel").toString(), ex.getMessage()));
}
break;
case UpdTag:
try {
if (getNullValue()) {
insertValue(null);
setNullValue(false);
} else if (getEmptyStringValue()) {
insertValue("");
setEmptyStringValue(false);
} else {
updates.add(upd);
}
} catch (SQLException ex) {
throw new SAXException(
MessageFormat.format(
resBundle.handleGetObject("xmlrch.errupdate").toString(), ex.getMessage()));
}
break;
default:
break;
}
default:
break;
}
}
/**
* Prints a warning message to <code>System.out</code> giving the line number and uri for what
* caused the warning plus a message explaining the reason for the warning. This method is invoked
* by the SAX parser.
*
* @param err a warning generated by the SAX parser
*/
public void warning(SAXParseException err) throws SAXParseException {
System.out.println(
MessageFormat.format(
resBundle.handleGetObject("xmlrch.warning").toString(),
new Object[] {err.getMessage(), err.getLineNumber(), err.getSystemId()}));
}
private void setMetaDataValue(String s) throws SQLException {
// find out if we are going to be dealing with a null
boolean nullValue = getNullValue();
switch (getTag()) {
case ColumnCountTag:
md = new RowSetMetaDataImpl();
idx = 0;
if (nullValue) {
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue1").toString());
} else {
md.setColumnCount(getIntegerValue(s));
}
break;
case ColumnDefinitionTag:
break;
case ColumnIndexTag:
idx++;
break;
case AutoIncrementTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue1").toString());
else md.setAutoIncrement(idx, getBooleanValue(s));
break;
case CaseSensitiveTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue1").toString());
else md.setCaseSensitive(idx, getBooleanValue(s));
break;
case CurrencyTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue1").toString());
else md.setCurrency(idx, getBooleanValue(s));
break;
case NullableTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue1").toString());
else md.setNullable(idx, getIntegerValue(s));
break;
case SignedTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue1").toString());
else md.setSigned(idx, getBooleanValue(s));
break;
case SearchableTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue1").toString());
else md.setSearchable(idx, getBooleanValue(s));
break;
case ColumnDisplaySizeTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue1").toString());
else md.setColumnDisplaySize(idx, getIntegerValue(s));
break;
case ColumnLabelTag:
if (nullValue) md.setColumnLabel(idx, null);
else md.setColumnLabel(idx, s);
break;
case ColumnNameTag:
if (nullValue) md.setColumnName(idx, null);
else md.setColumnName(idx, s);
break;
case SchemaNameTag:
if (nullValue) {
md.setSchemaName(idx, null);
} else md.setSchemaName(idx, s);
break;
case ColumnPrecisionTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue1").toString());
else md.setPrecision(idx, getIntegerValue(s));
break;
case ColumnScaleTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue1").toString());
else md.setScale(idx, getIntegerValue(s));
break;
case MetaTableNameTag:
if (nullValue) md.setTableName(idx, null);
else md.setTableName(idx, s);
break;
case CatalogNameTag:
if (nullValue) md.setCatalogName(idx, null);
else md.setCatalogName(idx, s);
break;
case ColumnTypeTag:
if (nullValue)
throw new SQLException(resBundle.handleGetObject("xmlrch.badvalue1").toString());
else md.setColumnType(idx, getIntegerValue(s));
break;
case ColumnTypeNameTag:
if (nullValue) md.setColumnTypeName(idx, null);
else md.setColumnTypeName(idx, s);
break;
default:
// System.out.println("MetaData: Unknown Tag: (" + getTag() + ")");
break;
}
}