Cocoon API: Class SQLProcessor

org.apache.cocoon.processor.sql
Class SQLProcessor

java.lang.Object
  |
  +--org.apache.cocoon.framework.AbstractActor
        |
        +--org.apache.cocoon.processor.sql.SQLProcessor

All Implemented Interfaces:

Actor, Changeable, Processor, Status

public class SQLProcessor

extends AbstractActor

implements Processor, Status

A processor that performs SQL database queries.

Version:

$Revision: 1.13 $ $Date: 2000/06/07 19:45:50 $

Author:

Donald Ball

Field Summary

protected static int	ATTRIBUTE_NULLS Print null columns with NULL attribute
protected static QueryCreator	default_query_creator The default query creator, does {@...} substitution
protected static java.util.Hashtable	drivers A table of already instantiated drivers to avoid memory leak on stupid JVM implementations
protected static int	OMIT_NULLS Omit null columns
protected static java.util.Hashtable	query_creators A table of already instantiated creators for the same rason

Fields inherited from class org.apache.cocoon.framework.AbstractActor

director

Constructor Summary

SQLProcessor()

Method Summary

protected org.apache.cocoon.processor.sql.Column[]	getColumns(java.sql.ResultSetMetaData md, java.lang.String tag_case)
static java.lang.String	getCountQuery(java.lang.String query)
protected static int	getIntProperty(java.util.Properties props, java.lang.String name, int def)
java.lang.String	getStatus() Returns information about the status of the implementing class.
boolean	hasChanged(java.lang.Object context) Right now, always return true.
org.w3c.dom.Document	process(org.w3c.dom.Document document, java.util.Dictionary parameters) Process the DOM tree.
protected void	processQuery(org.w3c.dom.Document document, java.util.Dictionary parameters, org.w3c.dom.Element query_element, java.util.Properties query_props, java.sql.Connection conn) Process a single query node

Methods inherited from class org.apache.cocoon.framework.AbstractActor

init

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cocoon.framework.Actor

init

Field Detail

drivers

protected static java.util.Hashtable drivers

A table of already instantiated drivers to avoid memory leak on stupid JVM implementations

query_creators

protected static java.util.Hashtable query_creators

A table of already instantiated creators for the same rason

default_query_creator

protected static QueryCreator default_query_creator

The default query creator, does {@...} substitution

OMIT_NULLS

protected static final int OMIT_NULLS

Omit null columns

ATTRIBUTE_NULLS

protected static final int ATTRIBUTE_NULLS

Print null columns with NULL attribute

Constructor Detail

SQLProcessor

public SQLProcessor()

Method Detail

process

public org.w3c.dom.Document process(org.w3c.dom.Document document,
                                    java.util.Dictionary parameters)
                             throws java.lang.Exception

Process the DOM tree.

Specified by:

process in interface Processor

processQuery

protected void processQuery(org.w3c.dom.Document document,
                            java.util.Dictionary parameters,
                            org.w3c.dom.Element query_element,
                            java.util.Properties query_props,
                            java.sql.Connection conn)
                     throws java.lang.Exception

Process a single query node

hasChanged

public boolean hasChanged(java.lang.Object context)

Right now, always return true. How else do we handle this?

Specified by:

hasChanged in interface Changeable

getStatus

public java.lang.String getStatus()

Description copied from interface: Status

Returns information about the status of the implementing class. Note: this is use instead of the usual toString() method because some of these methods are declared final in some classes in JDK 1.1.

Specified by:

getStatus in interface Status

getColumns

protected org.apache.cocoon.processor.sql.Column[] getColumns(java.sql.ResultSetMetaData md,
                                                              java.lang.String tag_case)
                                                       throws java.sql.SQLException

getIntProperty

protected static int getIntProperty(java.util.Properties props,
                                    java.lang.String name,
                                    int def)

getCountQuery

public static java.lang.String getCountQuery(java.lang.String query)