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oracle.xml.sql.query
Class OracleXMLQuery

java.lang.Object
oracle.xml.sql.query.OracleXMLQuery

public class OracleXMLQuery

extends java.lang.Object

This generates XML from a SQL query. A typical sequence might look like this:

  import java.sql.*;
  import oracle.xml.sql.query.*;
  import oracle.jdbc.*;

  public class sample
  {
    public static void main(String args[]) throws Exception
    {
      DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
      Connection conn =
          DriverManager.getConnection("jdbc:oracle:oci8:scott/tiger@");
      OracleXMLQuery qry = new OracleXMLQuery(conn, "select * from emp");
      System.out.println(qry.getXMLString());
      conn.close();
    }
  }
  

Field Summary

static int	DTD Specifies that a DTD is to be generated
static java.lang.String	ERROR_TAG Specifies the default tag name for the ERROR document
static int	MAXROWS_ALL Specifies that all rows should be included in the result
static int	MAXROWS_DEFAULT Deprecated. since v2.0; Use MAXROWS_ALL instead
static int	MAXROWS_NONE Deprecated. since v2.0; Use 0 instead
static int	NONE Specifies that a DTD is not to be generated.
static java.lang.String	ROW_TAG Specifies the default tag name for ROW elements.
static java.lang.String	ROWIDATTR_TAG Specifies the default tag name for the ROWIDATTR.
static java.lang.String	ROWSET_TAG Specifies the default tag name for the document.
static int	SCHEMA Specifies that an XML schema is not to be generated.
static int	SKIPROWS_ALL Specifies that all rows be skipped in the result.
static int	SKIPROWS_DEFAULT Deprecated. since v2.0; Use 0 instead
static int	SKIPROWS_NONE Deprecated. since v2.0; Use 0 instead

Constructor Summary

OracleXMLQuery(java.sql.Connection conn, java.sql.ResultSet rset)
Constructor for the OracleXMLQueryObject.

OracleXMLQuery(java.sql.Connection conn, java.lang.String query)
Constructor for the OracleXMLQuery object.

OracleXMLQuery(oracle.xml.sql.dataset.OracleXMLDataSet dset)
Constructor for the OracleXMLQueryObject.

Method Summary

void	bindValue(java.lang.String bindName, java.lang.String bindValue) Sets a bind name/value pair.
void	clearBindValues() Clears bind name/value pairs.
void	close() Closes open resources created by the OracleXML engine.
long	getNumRowsProcessed() Returns the number of rows processed.
void	getXML(oracle.xml.sql.docgen.OracleXMLDocGen doc, int metaType) NOTE: THIS IS AN INTERNAL CALL Transforms the object-relational data, specified in the constructor, into an XML document which is returned via the doc argument.
Document	getXMLDOM() Transforms the object-relational data, specified in the constructor, into an XML document.
Document	getXMLDOM(boolean withDTD) Deprecated. since 1.2.1; please use getXMLDOM(int) instead
Document	getXMLDOM(int metaType) Transforms the object-relational data, specified in the constructor, into an XML document.
Document	getXMLDOM(Node root) Transforms the object-relational data, specified in the constructor, into an XML document.
Document	getXMLDOM(Node root, int metaType) Transforms the object-relational data, specified in the constructor, into XML.
java.lang.String	getXMLMetaData(int metaType, boolean withVer) Returns either the DTD or the XMLSchema for the XML document generated by getXML calls.
void	getXMLSAX(ContentHandler sax) Transforms the object-relational data, specified in the constructor, into an XML document in SAX form.
Document[]	getXMLSchema() Generates XML Schema(s) corresponding to the query.
void	getXMLStream(Node root, int metaType, java.io.Writer out) Transforms the object-relational data, specified in the constructor, into XML.
java.lang.String	getXMLString() Transforms the object-relational data, specified in the constructor, into an XML document.
java.lang.String	getXMLString(boolean withDTD) Deprecated. since 1.2.1; please use getXMLString(int) instead
java.lang.String	getXMLString(int metaType) Transforms the object-relational data, specified in the constructor, into an XML document.
java.lang.String	getXMLString(Node root) Transforms the object-relational data, specified in the constructor, into an XML document.
java.lang.String	getXMLString(Node root, int metaType) Transforms the object-relational data, specified in the constructor, into an XML document.
void	keepCursorState(boolean alive) Deprecated. since 1.2.1; use keepObjectOpen instead.
void	keepObjectOpen(boolean alive) Specifies whether to keep the input object open after a getXML()/code> call.
void	removeXSLTParam(java.lang.String name) Removes the value of a top-level stylesheet parameter.
void	resetResultSet() Resets the result set to start XML generation from the from the first row of the resultset.
void	setCollIdAttr(java.lang.String collIdAttr) Deprecated. since 1.2.1; please use setCollIdAttrName instead.
void	setCollIdAttrName(java.lang.String attrName) Sets the name of the collection element separator tag id attribute.
void	setDataHeader(java.io.Reader header, java.lang.String docTag) Sets the XML data header.
void	setDateFormat(java.lang.String mask) Specifies the format of dates used in the XML document.
void	setEncoding(java.lang.String enc) Sets the processing instruction for encoding, the PI, in the XML document.
void	setErrorTag(java.lang.String tag) Sets the tag used to enclose the XML error documents.
void	setException(java.lang.Exception e) Allows the user to pass in an exception, and have the XSU handle it.
void	setMaxRows(int rows) Sets the maximum number of rows to be converted to XML.
void	setMetaHeader(java.io.Reader header) Sets the XML meta header.
void	setRaiseException(boolean flag) Specifies whether to throw the raised exceptions.
void	setRaiseNoRowsException(boolean flag) Specifies whether to throw an OracleXMLNoRowsException if the generated XML document is empty.
void	setRowIdAttrName(java.lang.String attrName) Sets the name of the row enclosing tag id attribute.
void	setRowIdAttrValue(java.lang.String colName) Specifies the scalar column whose value is assigned to the row id attribute.
void	setRowIdColumn(java.lang.String colName) Deprecated. since 1.2.1 -- please use setRowIdAttrValue instead.
void	setRowsetTag(java.lang.String tag) Sets the tag used to enclose the XML dataset.
void	setRowTag(java.lang.String tag) Sets the tag to be used to enclose the XML element corresponding to a db. record.
void	setSkipRows(int rows) Sets the number of rows to skip.
void	setSQLToXMLNameEscaping(boolean flag) Specifies whether to turn on XML tag escaping for SQL object names, to ensure conversion to valid XML identifiers.
void	setStrictLegalXMLCharCheck(boolean flag) Tells XSU whether it should do strict checking on the input data (as generated by the query) before generating the XML document.
void	setStyleSheet(java.lang.String uri) Deprecated. since XSU2.0 -- please use setStylesheetHeader instead.
void	setStyleSheet(java.lang.String uri, java.lang.String type) Deprecated. since XSU2.0 -- please use setStylesheetHeader instead.
void	setStylesheetHeader(java.lang.String uri) Sets the stylesheet header processing instructions in the generated XML document.
void	setStylesheetHeader(java.lang.String uri, java.lang.String type) Sets the stylesheet header processing instructions in the generated XML document.
void	setXSLT(java.io.Reader stylesheet, java.lang.String ref) Sets the XSL transformation to be applied to generated XML.
void	setXSLT(java.lang.String stylesheet, java.lang.String ref) Sets the XSL transformation to be applied to generated XML.
void	setXSLTParam(java.lang.String name, java.lang.String value) Sets the value for top-level stylesheet parameter.
void	useLowerCaseTagNames() Specifies use of lower case for all tag names.
void	useNullAttributeIndicator(boolean flag) Specifies whether to use an XML attribute to indicate NULLness, or by omitting the entity from the XML document.
void	useTypeForCollElemTag(boolean flag) Specifies the use of collection element's type name as the collection element tag name when called with a TRUE value for the flag parameter.
void	useUpperCaseTagNames() Specifies use of upper case for all tag names.

Methods inherited from class java.lang.Object

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

Field Detail

MAXROWS_NONE

public static final int MAXROWS_NONE

Deprecated. since v2.0; Use 0 instead

See Also:

Constant Field Values

MAXROWS_ALL

public static final int MAXROWS_ALL

Specifies that all rows should be included in the result

See Also:

Constant Field Values

MAXROWS_DEFAULT

public static final int MAXROWS_DEFAULT

Deprecated. since v2.0; Use MAXROWS_ALL instead

See Also:

Constant Field Values

SKIPROWS_NONE

public static final int SKIPROWS_NONE

Deprecated. since v2.0; Use 0 instead

See Also:

Constant Field Values

SKIPROWS_ALL

public static final int SKIPROWS_ALL

Specifies that all rows be skipped in the result.

See Also:

Constant Field Values

SKIPROWS_DEFAULT

public static final int SKIPROWS_DEFAULT

Deprecated. since v2.0; Use 0 instead

See Also:

Constant Field Values

NONE

public static final int NONE

Specifies that a DTD is not to be generated.

See Also:

Constant Field Values

DTD

public static final int DTD

Specifies that a DTD is to be generated

See Also:

Constant Field Values

SCHEMA

public static final int SCHEMA

Specifies that an XML schema is not to be generated.

See Also:

Constant Field Values

ROWSET_TAG

public static final java.lang.String ROWSET_TAG

Specifies the default tag name for the document.

See Also:

Constant Field Values

ROW_TAG

public static final java.lang.String ROW_TAG

Specifies the default tag name for ROW elements.

See Also:

Constant Field Values

ERROR_TAG

public static final java.lang.String ERROR_TAG

Specifies the default tag name for the ERROR document

See Also:

Constant Field Values

ROWIDATTR_TAG

public static final java.lang.String ROWIDATTR_TAG

Specifies the default tag name for the ROWIDATTR.

See Also:

Constant Field Values

Constructor Detail

OracleXMLQuery

public OracleXMLQuery(java.sql.Connection conn,
                      java.lang.String query)

Constructor for the OracleXMLQuery object.

Parameters:

conn - database connection

query - the SQL query string

OracleXMLQuery

public OracleXMLQuery(java.sql.Connection conn,
                      java.sql.ResultSet rset)

Constructor for the OracleXMLQueryObject.

Parameters:

conn - database connection

rset - jdbc result set object

OracleXMLQuery

public OracleXMLQuery(oracle.xml.sql.dataset.OracleXMLDataSet dset)

Constructor for the OracleXMLQueryObject.

Parameters:

conn - database connection

dset - dataset

Method Detail

bindValue

public void bindValue(java.lang.String bindName,
                      java.lang.String bindValue)

Sets a bind name/value pair. Making this call triggers a dataset refresh.

Parameters:

bindName - bind name

bindValue - bind value

clearBindValues

public void clearBindValues()

Clears bind name/value pairs.

Parameters:

None -

resetResultSet

public void resetResultSet()

Resets the result set to start XML generation from the from the first row of the resultset.

getXMLString

public java.lang.String getXMLString()

Transforms the object-relational data, specified in the constructor, into an XML document.

Returns:

the string representation of the XML document

getXMLString

public java.lang.String getXMLString(int metaType)

Transforms the object-relational data, specified in the constructor, into an XML document. The metaType argument specifies the type of XML metadata generated with the XML; valid values are NONE. and DTD, or SCHEMA (static fields of this class).

Parameters:

metaType - type of XML metadata: NONE, DTD, or SCHEMA

Returns:

the string representation of the XML document

getXMLString

public java.lang.String getXMLString(boolean withDTD)

Deprecated. since 1.2.1; please use getXMLString(int) instead

getXMLString

public java.lang.String getXMLString(Node root)

Transforms the object-relational data, specified in the constructor, into an XML document. The root argument is considered the "root" element of the XML document if its value is not null.

Parameters:

root - root node to which to append the new XML

Returns:

the string representation of the XML document

getXMLString

public java.lang.String getXMLString(Node root,
                                     int metaType)

Transforms the object-relational data, specified in the constructor, into an XML document. The root argument is considered the "root" element of the XML document if its value is not null. The metaType argument specifies the type of XML metadata generate with the XML; valid values are NONE and DTD, static fields of this class. If the root argument is not null, the DTD is not generated, even if requested.

Parameters:

root - root node to which to append the new XML

metaType - type of XML metadata: NONE, DTD, or SCHEMA

Returns:

the string representation of the XML document

getXMLDOM

public Document getXMLDOM()

Transforms the object-relational data, specified in the constructor, into an XML document.

Returns:

the DOM representation of the XML document

getXMLDOM

public Document getXMLDOM(Node root)

Transforms the object-relational data, specified in the constructor, into an XML document. The root argument is considered the "root" element of the XML document if its value is not null.

Parameters:

root - root node to which to append the new XML

Returns:

the string representation of the XML document

getXMLDOM

public Document getXMLDOM(int metaType)

Transforms the object-relational data, specified in the constructor, into an XML document. The metaType argument specifies the type of XML metadata generate with the XML; valid values are NONE and SCHEMA, static fields of this class.

Parameters:

metaType - type of XML metadata: NONE or SCHEMA

Returns:

the string representation of the XML document

getXMLDOM

public Document getXMLDOM(boolean withDTD)

Deprecated. since 1.2.1; please use getXMLDOM(int) instead

getXMLDOM

public Document getXMLDOM(Node root,
                          int metaType)

Transforms the object-relational data, specified in the constructor, into XML. If not NULL, the root argument is considered the "root" element of the XML doc. The metaType argument is used to specify the type of XML metadata the XSU is to generate along with the XML. Currently this value is ignored, and no XML metadata is generated.

Parameters:

root - root node to which to append the new XML

metaType - the type of XML metadata (NONE, SCHEMA)

Returns:

the string representation of the XML document

getXMLStream

public void getXMLStream(Node root,
                         int metaType,
                         java.io.Writer out)

Transforms the object-relational data, specified in the constructor, into XML. If not NULL, the root argument is considered the "root" element of the XML doc. The metaType argument is used to specify the type of XML metadata the XSU is to generate along with the XML. The output is written to the stream passed in.

Parameters:

root - root node to which to append the new XML

metaType - the type of XML metadata (NONE, SCHEMA)

out - the stream to write the output to

getXMLSAX

public void getXMLSAX(ContentHandler sax)

Transforms the object-relational data, specified in the constructor, into an XML document in SAX form.

Parameters:

sax - ContentHandler object to be registered

getXML

public void getXML(oracle.xml.sql.docgen.OracleXMLDocGen doc,
                   int metaType)

NOTE: THIS IS AN INTERNAL CALL Transforms the object-relational data, specified in the constructor, into an XML document which is returned via the doc argument.

Parameters:

doc - object containing the generated XML document

metaType - type of XML metadata to generate (NONE or DTD)

getNumRowsProcessed

public long getNumRowsProcessed()

Returns the number of rows processed.

Returns:

number of rows processed.

getXMLMetaData

public java.lang.String getXMLMetaData(int metaType,
                                       boolean withVer)

Returns either the DTD or the XMLSchema for the XML document generated by getXML calls. The metaType parameter specifies the type of XML metadata to be generated. The withVer parameter specifies whether to generate the version header.

Parameters:

metaType - type of XML metadata: NONE or DTD

withVer - TRUE to generate the version header

getXMLSchema

public Document[] getXMLSchema()

Generates XML Schema(s) corresponding to the query.

Returns:

the XML Schema(s)

setMetaHeader

public void setMetaHeader(java.io.Reader header)

Sets the XML meta header. The header is inserted at the begining of the metadata section, DTD or XMLSchema, of each XML document generated. The most recently specified meta header is used; a null value for the header parameter unsets the meta header.

Parameters:

header - header

setDataHeader

public void setDataHeader(java.io.Reader header,
                          java.lang.String docTag)

Sets the XML data header. The header is inserted at the begining of the query-generated XML entity, the rowset. A docTag tag encloses the header and the rowset. The most recently specified data header is used; a null value for the header parameter unsets the data header.

Parameters:

header - header

docTag - tag used to enclose the data header and the rowset

setEncoding

public void setEncoding(java.lang.String enc)

Sets the processing instruction for encoding, the PI, in the XML document. The default characterset is specified in the encoding PI if the value of the enc parameter is null or an empty string.

Parameters:

enc - IANA name for encoding of the XML document

setStrictLegalXMLCharCheck

public void setStrictLegalXMLCharCheck(boolean flag)

Tells XSU whether it should do strict checking on the input data (as generated by the query) before generating the XML document. If XSU is using strict checking, and it finds a character that is disallowed in an XML document, then it throws an exception.

Parameters:

ctxHdl - context handle

flag - do strict checking?

setDateFormat

public void setDateFormat(java.lang.String mask)

Specifies the format of dates used in the XML document. The default setting format, or date mask, should conform to requirements of the java.text.SimpleDateFormat class. Setting the mask parameter to null</null> or empty string sets the default mask OracleXMLCore.DATE_FORMAT.

Parameters:

mask - the date mask

setRowsetTag

public void setRowsetTag(java.lang.String tag)

Sets the tag used to enclose the XML dataset.

Parameters:

tag - tag name

setRowTag

public void setRowTag(java.lang.String tag)

Sets the tag to be used to enclose the XML element corresponding to a db. record.

Parameters:

tag - tag name

setErrorTag

public void setErrorTag(java.lang.String tag)

Sets the tag used to enclose the XML error documents.

Parameters:

tag - tag name

setRowIdAttrName

public void setRowIdAttrName(java.lang.String attrName)

Sets the name of the row enclosing tag id attribute. A null or empty string value in the attrName omits the row id attribute.

Parameters:

attrName - attribute name

setRowIdAttrValue

public void setRowIdAttrValue(java.lang.String colName)

Specifies the scalar column whose value is assigned to the row id attribute. A null or empty string value in the colName parameter assigns the row count value to the id attribute, 0, 1, 2, and so on.

Parameters:

colName - column name

setRowIdColumn

public void setRowIdColumn(java.lang.String colName)

Deprecated. since 1.2.1 -- please use setRowIdAttrValue instead.

setCollIdAttrName

public void setCollIdAttrName(java.lang.String attrName)

Sets the name of the collection element separator tag id attribute. A null or empty string value in the attrName omits the separator tag id attribute.

Parameters:

attrName - attribute name

setCollIdAttr

public void setCollIdAttr(java.lang.String collIdAttr)

Deprecated. since 1.2.1; please use setCollIdAttrName instead.

useTypeForCollElemTag

public void useTypeForCollElemTag(boolean flag)

Specifies the use of collection element's type name as the collection element tag name when called with a TRUE value for the flag parameter. By default, the tag name is a concatenation of the tag name and "_item".

Parameters:

flag - TRUE to use the element's type name as the tag name

useNullAttributeIndicator

public void useNullAttributeIndicator(boolean flag)

Specifies whether to use an XML attribute to indicate NULLness, or by omitting the entity from the XML document.

Parameters:

flag - TRUE to use attribute to indicate null

setStylesheetHeader

public void setStylesheetHeader(java.lang.String uri)

Sets the stylesheet header processing instructions in the generated XML document. A null value for uri unsets the stylesheet header and type.

Parameters:

uri - stylesheet URI

setStyleSheet

public void setStyleSheet(java.lang.String uri)

Deprecated. since XSU2.0 -- please use setStylesheetHeader instead.

setStylesheetHeader

public void setStylesheetHeader(java.lang.String uri,
                                java.lang.String type)

Sets the stylesheet header processing instructions in the generated XML document. A null value for uri unsets the stylesheet header and type.

Parameters:

uri - stylesheet URI

type - stylesheet type; default value is text/xsl

setStyleSheet

public void setStyleSheet(java.lang.String uri,
                          java.lang.String type)

Deprecated. since XSU2.0 -- please use setStylesheetHeader instead.

setXSLT

public void setXSLT(java.lang.String stylesheet,
                    java.lang.String ref)

Sets the XSL transformation to be applied to generated XML. Replaces a previously registered stylesheet. To deregister the stylesheet, pass a null in the stylesheet parameter.

Parameters:

stylesheet - the stylesheet URI

ref - URL for include, import and external entities

setXSLT

public void setXSLT(java.io.Reader stylesheet,
                    java.lang.String ref)

Sets the XSL transformation to be applied to generated XML. Replaces a previously registered stylesheet. To deregister the stylesheet, pass a null in the stylesheet parameter.

Parameters:

stylesheet - the stylesheet

ref - URL for include, import and external entities

setXSLTParam

public void setXSLTParam(java.lang.String name,
                         java.lang.String value)

Sets the value for top-level stylesheet parameter. The value parameter is expected to be a valid XPath expression; literal String values have to be explicitly quoted. This method is a no-op if no stylesheet is registered.

Parameters:

name - parameter name

value - parameter value as an XPATH expression

removeXSLTParam

public void removeXSLTParam(java.lang.String name)

Removes the value of a top-level stylesheet parameter. This method is a no-op if no stylesheet is registered.

Parameters:

name - parameter name

setSQLToXMLNameEscaping

public void setSQLToXMLNameEscaping(boolean flag)

Specifies whether to turn on XML tag escaping for SQL object names, to ensure conversion to valid XML identifiers.

Parameters:

flag - TRUE to turn on SQL to XML escaping

useLowerCaseTagNames

public void useLowerCaseTagNames()

Specifies use of lower case for all tag names. This call should be made only after after all the desired tags are set.

useUpperCaseTagNames

public void useUpperCaseTagNames()

Specifies use of upper case for all tag names. This call should be made only after after all the desired tags are set.

setException

public void setException(java.lang.Exception e)

Allows the user to pass in an exception, and have the XSU handle it.

Parameters:

e - the exception to be processed by the XSU.

setRaiseException

public void setRaiseException(boolean flag)

Specifies whether to throw the raised exceptions. By defualt, or if the value of flag parameter is FALSE, the SQL exceptions are caught and used to generate an XML exception message document.

Parameters:

flag - TRUE to throw raised exception

setRaiseNoRowsException

public void setRaiseNoRowsException(boolean flag)

Specifies whether to throw an OracleXMLNoRowsException if the generated XML document is empty. By default, the exception is not thrown.

Parameters:

flag - TRUE to throw OracleXMLNoRowsException

setMaxRows

public void setMaxRows(int rows)

Sets the maximum number of rows to be converted to XML. By default, no maximum is set. Use the MAXROWS_ALL field to explicitly specify the maximum number of rows.

Parameters:

rows - maximum number of rows to generate

setSkipRows

public void setSkipRows(int rows)

Sets the number of rows to skip. By default, no rows are skipped. Use SKIPROWS_ALL to skip all the rows.

Parameters:

rows - number of rows to skip

close

public void close()

Closes open resources created by the OracleXML engine. This call will not effect result sets supplied by the user.

keepObjectOpen

public void keepObjectOpen(boolean alive)

Specifies whether to keep the input object open after a getXML()/code> call. If the input object remains open, successive calls to getXML return successive sets of rows. By default, getXML() calls that do not use a ResultSet object close both the ResultSet and Statement objects. The close() function explicitly closes the cursor state.

Parameters:

alive - TRUE to keep the object open

keepCursorState

public void keepCursorState(boolean alive)

Deprecated. since 1.2.1; use keepObjectOpen instead.

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