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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.openjpa.jdbc.meta;
import java.util.Properties;
import org.apache.openjpa.jdbc.schema.Column;
import org.apache.openjpa.jdbc.schema.ForeignKey;
import org.apache.openjpa.jdbc.schema.Table;
import org.apache.openjpa.lib.util.Closeable;
/**
* Plugin in interface to customize the output of the
* {@link ReverseMappingTool}.
*
* @author Abe White
*/
public interface ReverseCustomizer
extends Closeable {
/**
* Set configuration properties given by the user.
*/
void setConfiguration(Properties props);
/**
* Set the reverse mapping tool using this customizer. You can use
* the tool to see how it is configured, or to use utility methods the
* tool provides.
*/
void setTool(ReverseMappingTool tool);
/**
* Return the type of the given table, or the given default type.
* See the TABLE_XXX constants in {@link ReverseMappingTool}.
*/
int getTableType(Table table, int defaultType);
/**
* Return the fully-qualified class name to generate for the given table.
* Return null to prevent the table from being mapped. Return the given
* default name if it is acceptable.
*/
String getClassName(Table table, String defaultName);
/**
* Customize the given class information produced by the reverse mapping
* tool. To change the application identity class, use
* {@link ReverseMappingTool#generateClass} to creat the new class object.
* The class will not have any fields at the time of this call.
*/
void customize(ClassMapping cls);
/**
* Return a code template for the given class, or null to use the standard
* system-generated Java code. To facilitate template reuse, the
* following parameters can appear in your template; the proper values
* will be subtituted by the system:
*
*
${packageDec}: The package declaration, in the form
* "package <package name >;", or empty string if no package.
*
${imports}: Imports for the packages used by the declared
* field types.
*
${className}: The name of the class, without package.
*
${extendsDec}: Extends declaration, in the form
* "extends <superclass>", or empty string if no superclass.
*
${constructor}: A constructor that takes in all primary key fields
* of the class, or empty string if the class uses datastore identity.
*
${fieldDecs}: Declarations of all the generated fields.
*
${fieldCode}: Get/set methods for all the generated fields.
*
*/
String getClassCode(ClassMapping mapping);
/**
* Return the field name used to map the given columns, or null to prevent
* the columns from being mapped. Return the given default if it is
* acceptable.
*
* @param dec the class that will declare this field
* @param cols the column(s) this field will represent
* @param fk for relation fields, the foreign key to the related type
*/
String getFieldName(ClassMapping dec, Column[] cols, ForeignKey fk,
String defaultName);
/**
* Customize the given field information produced by the reverse mapping
* tool.
*/
void customize(FieldMapping field);
/**
* Return code for the initial value for the given field, or null to use
* the default generated by the system.
*/
String getInitialValue(FieldMapping field);
/**
* Return a code template for the declaration of the given field, or null
* to use the system-generated default Java code.
* To facilitate template reuse, the following parameters can appear in
* your template; the proper values will be subtituted by the system:
*
*
${fieldName}: The name of the field.
*
${capFieldName}: The capitalized field name.
*
${propertyName}: The field name without leading '_', if any.
*
${fieldType}: The field's type name.
*
${fieldValue}: The field's initial value, in the form
* " = <value>", or empty string if none.
*
*/
String getDeclaration(FieldMapping field);
/**
* Return a code template for the get/set methods of the given field, or
* null to use the system-generated default Java code.
* To facilitate template reuse, the following parameters can appear in
* your template; the proper values will be subtituted by the system:
*
*
${fieldName}: The name of the field.
*
${capFieldName}: The capitalized field name.
*
${propertyName}: The field name without leading '_', if any.
*
${fieldType}: The field's type name.
*
${fieldValue}: The field's initial value, in the form
* "= <value>", or empty string if none.
*
*/
String getFieldCode(FieldMapping field);
/**
* Notification that a table has gone unmapped. You can map the table
* yourself using this method. When mapping, use
* {@link ReverseMappingTool#generateClass} to create the class,
* {@link ReverseMappingTool#newClassMapping} to create the class metadata,
* and then {@link ClassMapping#addDeclaredFieldMapping} to add field
* metadata.
*
* @return true if you map the table, false otherwise
*/
boolean unmappedTable(Table table);
/**
* Invoked when the customizer is no longer needed.
*/
@Override void close();
}
