package liquibase.diff.output.changelog.core;
import liquibase.change.Change;
import liquibase.change.core.DropColumnChange;
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 UnexpectedColumnChangeGenerator implements UnexpectedObjectChangeGenerator {
@Override
public int getPriority(Class<? extends DatabaseObject> objectType, Database database) {
if (Column.class.isAssignableFrom(objectType)) {
return PRIORITY_DEFAULT;
}
return PRIORITY_NONE;
}
@Override
public Class<? extends DatabaseObject>[] runAfterTypes() {
return new Class[] {
PrimaryKey.class,
ForeignKey.class,
Table.class,
};
}
@Override
public Class<? extends DatabaseObject>[] runBeforeTypes() {
return null;
}
@Override
public Change[] fixUnexpected(DatabaseObject unexpectedObject, DiffOutputControl control, Database referenceDatabase, Database comparisonDatabase, ChangeGeneratorChain chain) {
Column column = (Column) unexpectedObject;
// if (!shouldModifyColumn(column)) {
// continue;
// }
if (column.getRelation() instanceof View) {
return null;
}
DropColumnChange change = new DropColumnChange();
change.setTableName(column.getRelation().getName());
if (control.getIncludeCatalog()) {
change.setCatalogName(column.getRelation().getSchema().getCatalogName());
}
if (control.getIncludeSchema()) {
change.setSchemaName(column.getRelation().getSchema().getName());
}
change.setColumnName(column.getName());
return new Change[] { change };
}
}