private static ChangeType findOldName(List<TableChange> changes, String oldName) {
for (TableChange change : changes) {
if (oldName.equals(change.getOldName())) {
return change.getChangeType();
}
}
return null;
}
private static String findNewName(List<TableChange> changes, String oldName) {
for (TableChange change : changes) {
if (oldName.equals(change.getOldName())) {
return change.getChangeType() == ChangeType.DROP ? null : change.getNewName();
}
}
return oldName;
}
private static void checkForeignKeyAlterColumns(
List<TableChange> columnChanges,
Collection<Column> columns,
ForeignKey foreignKey,
Table table) {
for (Column column : columns) {
for (TableChange change : columnChanges) {
if (column.getName().equals(change.getOldName())) {
throw new ForeignKeyPreventsAlterColumnException(
column.getName(), table.getName(), foreignKey.getConstraintName().getTableName());
}
}
}
}