com.im.df.query.ui
Class QueryFactories.QueryTermFactory

java.lang.Object
  com.im.df.query.ui.QueryFactories.QueryTermFactory

Direct Known Subclasses:

QueryFactories.CompositeQueryTermFactory, QueryFactories.FieldOperatorValueQueryTermFactory, QueryFactories.StructureQueryTermFactory

Enclosing class:

QueryFactories

public abstract static class QueryFactories.QueryTermFactory
extends Object

Field Summary

protected String	defaultWidgetFactoryType
protected Map<String,QueryFactories.WidgetFactory>	widgetFactories

Constructor Summary

QueryFactories.QueryTermFactory()

Method Summary

abstract SQLWhereClauseElement	createWhereClause(DFTermExpression query, com.im.df.impl.db.query.DFSQLElementFactory sqlFactory, String identifierQuoteString) Create an appropriate where clause for our type of query
protected DFOperator	findDefaultOperator(DFField field, boolean ignore) Find the default operator for this field type, or the IGNORE operator
protected QueryFactories.WidgetFactory	findPreferredWidgetType(DFTermExpression qt)
QueryFactories.WidgetFactory	findWidgetFactory(DFTermExpression qt) Find the widget factory of this query.
QueryFactories.WidgetFactory	findWidgetFactory(String type) Find the widget factory of this type.
abstract String	getType() The type is used as a hint so that the query term can be executed without having to make guesses about how to interpret it.
void	registerDefaultWidgetFactory(QueryFactories.WidgetFactory factory) Register a widget factory for this type of query term.
void	registerWidgetFactory(QueryFactories.WidgetFactory factory) Register a widget factory for this type of query term.

Methods inherited from class java.lang.Object

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

Field Detail

widgetFactories

protected Map<String,QueryFactories.WidgetFactory> widgetFactories

defaultWidgetFactoryType

protected String defaultWidgetFactoryType

Constructor Detail

QueryFactories.QueryTermFactory

public QueryFactories.QueryTermFactory()

Method Detail

getType

public abstract String getType()

The type is used as a hint so that the query term can be executed without having to make guesses about how to interpret it. When the query term is being created (e.g. by a query widget it should always be possible to specify its type. This should be specified in the DFTermExpression's options using the QUERY_TERM_TYPE constant as the key.

Returns:

A string that describes the type of this query term.

createWhereClause

public abstract SQLWhereClauseElement createWhereClause(DFTermExpression query,
                                                        com.im.df.impl.db.query.DFSQLElementFactory sqlFactory,
                                                        String identifierQuoteString)

Create an appropriate where clause for our type of query

registerWidgetFactory

public void registerWidgetFactory(QueryFactories.WidgetFactory factory)

Register a widget factory for this type of query term.

registerDefaultWidgetFactory

public void registerDefaultWidgetFactory(QueryFactories.WidgetFactory factory)

Register a widget factory for this type of query term.

findWidgetFactory

public QueryFactories.WidgetFactory findWidgetFactory(String type)

Find the widget factory of this type. If type is null the default factory will be returned.

findWidgetFactory

public QueryFactories.WidgetFactory findWidgetFactory(DFTermExpression qt)

Find the widget factory of this query. If a type is present in the options it will be used, otherwise the default type for the query will be returned.

findPreferredWidgetType

protected QueryFactories.WidgetFactory findPreferredWidgetType(DFTermExpression qt)

findDefaultOperator

protected DFOperator findDefaultOperator(DFField field,
                                         boolean ignore)

Find the default operator for this field type, or the IGNORE operator

Parameters:

field - The field

ignore - If true then the OPERATORS.IGNORE will returned

Returns:

The appropriate operator