package liquibase.diff.output.changelog.core;
import liquibase.change.Change;
import liquibase.change.core.DropForeignKeyConstraintChange;
import liquibase.database.Database;
import liquibase.diff.output.DiffOutputControl;
import liquibase.diff.output.changelog.ChangeGeneratorChain;
import liquibase.diff.output.changelog.UnexpectedObjectChangeGenerator;
import liquibase.structure.DatabaseObject;
import liquibase.structure.core.*;
public class UnexpectedForeignKeyChangeGenerator implements UnexpectedObjectChangeGenerator {
@Override
public int getPriority(Class<? extends DatabaseObject> objectType, Database database) {
if (ForeignKey.class.isAssignableFrom(objectType)) {
return PRIORITY_DEFAULT;
}
return PRIORITY_NONE;
}
@Override
public Class<? extends DatabaseObject>[] runAfterTypes() {
return null;
}
@Override
public Class<? extends DatabaseObject>[] runBeforeTypes() {
return new Class[] {
Table.class,
Index.class,
UniqueConstraint.class
};
}
@Override
public Change[] fixUnexpected(DatabaseObject unexpectedObject, DiffOutputControl control, Database referenceDatabase, Database comparisonDatabase, ChangeGeneratorChain chain) {
ForeignKey fk = (ForeignKey) unexpectedObject;
DropForeignKeyConstraintChange change = new DropForeignKeyConstraintChange();
change.setConstraintName(fk.getName());
change.setBaseTableName(fk.getForeignKeyTable().getName());
if (control.getIncludeCatalog()) {
change.setBaseTableCatalogName(fk.getForeignKeyTable().getSchema().getCatalogName());
}
if (control.getIncludeSchema()) {
change.setBaseTableSchemaName(fk.getForeignKeyTable().getSchema().getName());
}
Index backingIndex = fk.getBackingIndex();
// if (backingIndex == null) {
// Index exampleIndex = new Index().setTable(fk.getForeignKeyTable());
// for (String col : fk.getForeignKeyColumns().split("\\s*,\\s*")) {
// exampleIndex.getColumns().add(col);
// }
// control.setAlreadyHandledUnexpected(exampleIndex);
// } else {
control.setAlreadyHandledUnexpected(backingIndex);
// }
return new Change[] { change };
}
}