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package org.eclipse.jpt.gen.internal2;
import org.eclipse.jpt.db.Column;
import org.eclipse.jpt.db.ForeignKey;
import org.eclipse.jpt.db.Table;
/**
* Provide a pluggable way to determine whether and how the entity generator
* prints the names of various database objects.
*/
public interface DatabaseAnnotationNameBuilder {
/**
* Given the name of an entity and the table to which it is mapped,
* build and return a string to be used as the value for the entity's
* Table annotation's 'name' element. Return null if the entity
* maps to the table by default.
*/
String buildTableAnnotationName(String entityName, Table table);
/**
* Given the name of an attribute (field or property) and the column
* to which it is mapped,
* build and return a string to be used as the value for the attribute's
* Column annotation's 'name' element. Return null if the attribute
* maps to the column by default.
*/
String buildColumnAnnotationName(String attributeName, Column column);
/**
* Given the name of an attribute (field or property) and the
* many-to-one or many-to-many foreign key to which it is mapped,
* build and return a string to be used as the value for the attribute's
* JoinColumn annotation's 'name' element. Return null if the attribute
* maps to the join column by default.
* The specified foreign key consists of a single column pair whose
* referenced column is the single-column primary key of the foreign
* key's referenced table.
*/
String buildJoinColumnAnnotationName(String attributeName, ForeignKey foreignKey);
/**
* Build and return a string to be used as the value for a JoinColumn
* annotation's 'name' or 'referencedColumnName' element.
* This is called for many-to-one and many-to-many mappings when
* the default join column name and/or referenced column name are/is
* not applicable.
* @see buildJoinColumnAnnotationName(String, ForeignKey)
*/
String buildJoinColumnAnnotationName(Column column);
/**
* Build and return a string to be used as the value for a JoinTable
* annotation's 'name' element.
* This is called for many-to-many mappings when the default
* join table name is not applicable.
*/
String buildJoinTableAnnotationName(Table table);
/**
* The default implementation simple returns the database object's name,
* unaltered.
*/
final class Default implements DatabaseAnnotationNameBuilder {
public static final DatabaseAnnotationNameBuilder INSTANCE = new Default();
public static DatabaseAnnotationNameBuilder instance() {
return INSTANCE;
}
// ensure single instance
private Default() {
super();
}
public String buildTableAnnotationName(String entityName, Table table) {
return table.getName();
}
public String buildColumnAnnotationName(String attributeName, Column column) {
return column.getName();
}
public String buildJoinColumnAnnotationName(String attributeName, ForeignKey foreignKey) {
return foreignKey.getColumnPair().getBaseColumn().getName();
}
public String buildJoinColumnAnnotationName(Column column) {
return column.getName();
}
public String buildJoinTableAnnotationName(Table table) {
return table.getName();
}
@Override
public String toString() {
return "DatabaseAnnotationNameBuilder.Default"; //$NON-NLS-1$
}
}
}
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