org.apache.xalan.lib.sql
Class SQLDocument

java.lang.Object
  org.apache.xml.dtm.ref.DTMDefaultBase
      org.apache.xml.dtm.ref.DTMDefaultBaseTraversers
          org.apache.xml.dtm.ref.DTMDefaultBaseIterators
              org.apache.xalan.lib.sql.DTMDocument
                  org.apache.xalan.lib.sql.SQLDocument

All Implemented Interfaces:

DTM

public class SQLDocument
extends DTMDocument

The SQL Document is the main controlling class the executesa SQL Query

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.xalan.lib.sql.DTMDocument

DTMDocument.CharacterNodeHandler

Nested classes/interfaces inherited from class org.apache.xml.dtm.ref.DTMDefaultBaseIterators

DTMDefaultBaseIterators.AncestorIterator, DTMDefaultBaseIterators.AttributeIterator, DTMDefaultBaseIterators.ChildrenIterator, DTMDefaultBaseIterators.DescendantIterator, DTMDefaultBaseIterators.FollowingIterator, DTMDefaultBaseIterators.FollowingSiblingIterator, DTMDefaultBaseIterators.InternalAxisIteratorBase, DTMDefaultBaseIterators.NamespaceAttributeIterator, DTMDefaultBaseIterators.NamespaceChildrenIterator, DTMDefaultBaseIterators.NamespaceIterator, DTMDefaultBaseIterators.NthDescendantIterator, DTMDefaultBaseIterators.ParentIterator, DTMDefaultBaseIterators.PrecedingIterator, DTMDefaultBaseIterators.PrecedingSiblingIterator, DTMDefaultBaseIterators.RootIterator, DTMDefaultBaseIterators.SingletonIterator, DTMDefaultBaseIterators.TypedAncestorIterator, DTMDefaultBaseIterators.TypedAttributeIterator, DTMDefaultBaseIterators.TypedChildrenIterator, DTMDefaultBaseIterators.TypedDescendantIterator, DTMDefaultBaseIterators.TypedFollowingIterator, DTMDefaultBaseIterators.TypedFollowingSiblingIterator, DTMDefaultBaseIterators.TypedNamespaceIterator, DTMDefaultBaseIterators.TypedPrecedingIterator, DTMDefaultBaseIterators.TypedPrecedingSiblingIterator, DTMDefaultBaseIterators.TypedRootIterator, DTMDefaultBaseIterators.TypedSingletonIterator

Field Summary

Fields inherited from class org.apache.xml.dtm.ref.DTMDefaultBase

DEFAULT_BLOCKSIZE, DEFAULT_NUMBLOCKS, DEFAULT_NUMBLOCKS_SMALL, m_mgr, ROOTNODE

Fields inherited from interface org.apache.xml.dtm.DTM

ATTRIBUTE_NODE, CDATA_SECTION_NODE, COMMENT_NODE, DOCUMENT_FRAGMENT_NODE, DOCUMENT_NODE, DOCUMENT_TYPE_NODE, ELEMENT_NODE, ENTITY_NODE, ENTITY_REFERENCE_NODE, NAMESPACE_NODE, NOTATION_NODE, NTYPES, NULL, PROCESSING_INSTRUCTION_NODE, ROOT_NODE, TEXT_NODE

Constructor Summary

SQLDocument(DTMManager mgr, int ident)

Method Summary

java.sql.SQLWarning	checkWarnings()
void	close(boolean flushConnPool) Close down any resources used by this document.
void	documentRegistration() A dummy routine to satisify the abstract interface.
void	documentRelease() A dummy routine to satisify the abstract interface.
void	execute(XConnection xconn, SQLQueryParser query)
ExpressionContext	getExpressionContext() Return the context used to build this document
static SQLDocument	getNewDocument(ExpressionContext exprContext) This static method simplifies the creation of an SQL Document and allows us to embedd the complexity of creating / handling the dtmIdent inside the document.
boolean	hasErrors() Used by the XConnection to determine if the Document should handle the document differently.
void	skip(int value) Push the record set forward value rows.

Methods inherited from class org.apache.xalan.lib.sql.DTMDocument

appendChild, appendTextChild, dispatchCharactersEvents, dispatchToEvents, dumpDTM, getAttributeNode, getAxisIterator, getAxisTraverser, getContentHandler, getDeclHandler, getDocument, getDocumentAllDeclarationsProcessed, getDocumentBaseURI, getDocumentEncoding, getDocumentStandalone, getDocumentSystemIdentifier, getDocumentTypeDeclarationPublicIdentifier, getDocumentTypeDeclarationSystemIdentifier, getDocumentVersion, getDTDHandler, getElementById, getEntityResolver, getErrorHandler, getExpandedTypeID, getExpandedTypeID, getFirstAttribute, getFirstChild, getFirstNamespaceNode, getLastChild, getLevel, getLexicalHandler, getLocalName, getLocalNameFromExpandedNameID, getNamespaceFromExpandedNameID, getNamespaceType, getNamespaceURI, getNextAttribute, getNextNamespaceNode, getNextSibling, getNode, getNodeName, getNodeNameX, getNodeType, getNodeValue, getOwnerDocument, getParent, getPrefix, getPreviousSibling, getSourceLocatorFor, getStringValue, getStringValueChunk, getStringValueChunkCount, getTypedAxisIterator, getUnparsedEntityURI, hasChildNodes, isAttributeSpecified, isCharacterElementContentWhitespace, isDocumentAllDeclarationsProcessed, isNodeAfter, isSupported, needsTwoThreads, setDocumentBaseURI, setFeature, setProperty, supportsPreStripping

Methods inherited from class org.apache.xml.dtm.ref.DTMDefaultBase

dumpDTM, dumpNode, getDocumentRoot, getDTMIDs, getManager, getNodeHandle, getNodeIdent, getTypedFirstChild, getTypedNextSibling, makeNodeHandle, makeNodeIdentity, migrateTo

Methods inherited from class java.lang.Object

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

Constructor Detail

SQLDocument

public SQLDocument(DTMManager mgr,
                   int ident)

Parameters:

mgr -

ident -

Throws:

java.sql.SQLException

Method Detail

getNewDocument

public static SQLDocument getNewDocument(ExpressionContext exprContext)

This static method simplifies the creation of an SQL Document and allows us to embedd the complexity of creating / handling the dtmIdent inside the document. This type of method may better placed inside the DTMDocument code

getExpressionContext

public ExpressionContext getExpressionContext()

Return the context used to build this document

execute

public void execute(XConnection xconn,
                    SQLQueryParser query)
             throws java.sql.SQLException

Throws:

java.sql.SQLException

skip

public void skip(int value)

Push the record set forward value rows. Used to help in SQL pagination.

Parameters:

value -

hasErrors

public boolean hasErrors()

Used by the XConnection to determine if the Document should handle the document differently.

close

public void close(boolean flushConnPool)

Close down any resources used by this document. If an SQL Error occure while the document was being accessed, the SQL Connection used to create this document will be released to the Connection Pool on error. This allows the COnnection Pool to give special attention to any connection that may be in a errored state.

documentRegistration

public void documentRegistration()

Description copied from class: DTMDefaultBase

A dummy routine to satisify the abstract interface. If the DTM implememtation that extends the default base requires notification of registration, they can override this method.

Specified by:

documentRegistration in interface DTM

Overrides:

documentRegistration in class DTMDefaultBase

documentRelease

public void documentRelease()

Description copied from class: DTMDefaultBase

A dummy routine to satisify the abstract interface. If the DTM implememtation that extends the default base requires notification when the document is being released, they can override this method

Specified by:

documentRelease in interface DTM

Overrides:

documentRelease in class DTMDefaultBase

checkWarnings

public java.sql.SQLWarning checkWarnings()