org.mmbase.module.database.support
Class BaseJdbc2Node

java.lang.Object
  org.mmbase.module.database.support.BaseJdbc2Node

All Implemented Interfaces:

SearchQueryHandler

Direct Known Subclasses:

MMMckoiNode, MMSQL92Node, Sql92SingleFields, Support2Storage

Deprecated. This code is scheduled for removal once MMBase has been fully converted to the new StorageManager implementation.

public abstract class BaseJdbc2Node

extends java.lang.Object

implements SearchQueryHandler

This class serves as baseclass for database support classes. It implements the SearchQueryHandler interface by delegating all calls to this interface to a BasicQueryHandler instance. Call init() to initialize the instance. based on the database configuration XML file..

Since:

MMBase-1.7

Version:

$Id: BaseJdbc2Node.java,v 1.3 2004/01/27 12:04:47 pierre Exp $

Author:

Rob van Maris

Field Summary

Fields inherited from interface org.mmbase.storage.search.SearchQueryHandler

FEATURE_MAX_NUMBER, FEATURE_OFFSET, SUPPORT_NONE, SUPPORT_NORMAL, SUPPORT_OPTIMAL, SUPPORT_WEAK

Constructor Summary

protected

BaseJdbc2Node() Deprecated. Creates a new instance of BaseJdbc2Node

Method Summary

java.util.List	getNodes(SearchQuery query, MMObjectBuilder builder) Deprecated. Processes a search query, returns the result as a list of nodes.
int	getSupportLevel(Constraint constraint, SearchQuery query) Deprecated. Gets the level at which a constraint is supported for a query by this handler.
int	getSupportLevel(int feature, SearchQuery query) Deprecated. Gets the level at which a feature is supported for a query by this handler.
protected void	init(java.util.Map disallowedValues, XMLDatabaseReader parser) Deprecated. Initializes the instance, based on the database configuration XML file.

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseJdbc2Node

protected BaseJdbc2Node()

Deprecated.

Creates a new instance of BaseJdbc2Node

Method Detail

init

protected void init(java.util.Map disallowedValues,
                    XMLDatabaseReader parser)

Deprecated.

Initializes the instance, based on the database configuration XML file.

Parameters:

disallowedValues - Map mapping disallowed table/fieldnames to allowed alternatives.

parser - The parser that reads the database configuration from an XML file.

getSupportLevel

public int getSupportLevel(Constraint constraint,
                           SearchQuery query)
                    throws SearchQueryException

Deprecated.

Description copied from interface: SearchQueryHandler

Gets the level at which a constraint is supported for a query by this handler. This is one of either:

• SUPPORT_NONE
• SUPPORT_WEAK
• SUPPORT_NORMAL
• SUPPORT_OPTIMAL

Given the choice, the query handler with the highest level of support is prefered.

Specified by:

getSupportLevel in interface SearchQueryHandler

Throws:

SearchQueryException

getSupportLevel

public int getSupportLevel(int feature,
                           SearchQuery query)
                    throws SearchQueryException

Deprecated.

Description copied from interface: SearchQueryHandler

Gets the level at which a feature is supported for a query by this handler. This is one of either:

• SUPPORT_NONE
• SUPPORT_WEAK
• SUPPORT_NORMAL
• SUPPORT_OPTIMAL

Given the choice, the query handler with the highest level of support is prefered.

Specified by:

getSupportLevel in interface SearchQueryHandler

Throws:

SearchQueryException

getNodes

public java.util.List getNodes(SearchQuery query,
                               MMObjectBuilder builder)
                        throws SearchQueryException

Deprecated.

Description copied from interface: SearchQueryHandler

Processes a search query, returns the result as a list of nodes. Depending on the specified builder, the results will be:

• Resultnodes, with fields named according to the field aliases specified by the query.
• Clusternodes, with fields named <step alias>.<field name>, where the step alias is required to be of the form <step tablename><x>, and <x> is either empty or a single digit. Examples:
  images.number, images0.number, images1.number
• Real nodes, where all fields are required to be included in the query.

Specified by:

getNodes in interface SearchQueryHandler

Parameters:

query - The search query.

builder - The builder for the result nodes. Specify a ResultBuilder to get resultnodes. ClusterBuilder to get clusternodes.

Returns:

The resulting nodes.

Throws:

SearchQueryException

See Also:

ResultNode, ClusterNode