/**
* Generate the ChangeMetaData for this class. Default implementation reads from the @{@link
* DatabaseChange } annotation and calls out to {@link #createChangeParameterMetadata(String)} for
* each property.
*
* @throws UnexpectedLiquibaseException if no @DatabaseChange annotation on this Change class
*/
@Override
public ChangeMetaData createChangeMetaData() {
try {
DatabaseChange databaseChange = this.getClass().getAnnotation(DatabaseChange.class);
if (databaseChange == null) {
throw new UnexpectedLiquibaseException(
"No @DatabaseChange annotation for " + getClass().getName());
}
Set<ChangeParameterMetaData> params = new HashSet<ChangeParameterMetaData>();
for (PropertyDescriptor property :
Introspector.getBeanInfo(this.getClass()).getPropertyDescriptors()) {
if (isInvalidProperty(property)) {
continue;
}
Method readMethod = property.getReadMethod();
Method writeMethod = property.getWriteMethod();
if (readMethod == null) {
try {
readMethod =
this.getClass().getMethod("is" + StringUtils.upperCaseFirst(property.getName()));
} catch (Exception ignore) {
// it was worth a try
}
}
if (readMethod != null && writeMethod != null) {
DatabaseChangeProperty annotation =
readMethod.getAnnotation(DatabaseChangeProperty.class);
if (annotation == null || annotation.isChangeProperty()) {
params.add(createChangeParameterMetadata(property.getDisplayName()));
}
}
}
Map<String, String> notes = new HashMap<String, String>();
for (DatabaseChangeNote note : databaseChange.databaseNotes()) {
notes.put(note.database(), note.notes());
}
return new ChangeMetaData(
databaseChange.name(),
databaseChange.description(),
databaseChange.priority(),
databaseChange.appliesTo(),
notes,
params);
} catch (Throwable e) {
throw new UnexpectedLiquibaseException(e);
}
}
