/**
* Implementation checks the ChangeParameterMetaData for declared required fields and also
* delegates logic to the {@link
* liquibase.sqlgenerator.SqlGenerator#validate(liquibase.statement.SqlStatement,
* liquibase.database.Database, liquibase.sqlgenerator.SqlGeneratorChain)} method on the {@link
* SqlStatement} objects returned by {@link #generateStatements }. If no or null SqlStatements are
* returned by generateStatements then this method returns no errors. If there are no parameters
* than this method returns no errors
*/
@Override
public ValidationErrors validate(Database database) {
ValidationErrors changeValidationErrors = new ValidationErrors();
for (ChangeParameterMetaData param :
ChangeFactory.getInstance().getChangeMetaData(this).getParameters().values()) {
if (param.isRequiredFor(database) && param.getCurrentValue(this) == null) {
changeValidationErrors.addError(
param.getParameterName()
+ " is required for "
+ ChangeFactory.getInstance().getChangeMetaData(this).getName()
+ " on "
+ database.getShortName());
}
}
if (changeValidationErrors.hasErrors()) {
return changeValidationErrors;
}
String unsupportedWarning =
ChangeFactory.getInstance().getChangeMetaData(this).getName()
+ " is not supported on "
+ database.getShortName();
if (!this.supports(database)) {
changeValidationErrors.addError(unsupportedWarning);
} else if (!generateStatementsVolatile(database)) {
boolean sawUnsupportedError = false;
SqlStatement[] statements;
statements = generateStatements(database);
if (statements != null) {
for (SqlStatement statement : statements) {
boolean supported = SqlGeneratorFactory.getInstance().supports(statement, database);
if (!supported && !sawUnsupportedError) {
if (!statement.skipOnUnsupported()) {
changeValidationErrors.addError(unsupportedWarning);
sawUnsupportedError = true;
}
} else {
changeValidationErrors.addAll(
SqlGeneratorFactory.getInstance().validate(statement, database));
}
}
}
}
return changeValidationErrors;
}
