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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
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package org.apache.cayenne.project.validator;
import org.apache.cayenne.dba.TypesMapping;
import org.apache.cayenne.map.DbAttribute;
import org.apache.cayenne.map.DerivedDbAttribute;
import org.apache.cayenne.project.ProjectPath;
import org.apache.cayenne.util.Util;
/**
* @author Andrus Adamchik
*/
public class DbAttributeValidator extends TreeNodeValidator {
/**
* Constructor for DbAttributeValidator.
*/
public DbAttributeValidator() {
super();
}
public void validateObject(ProjectPath path, Validator validator) {
DbAttribute attribute = (DbAttribute) path.getObject();
// Must have name
if (Util.isEmptyString(attribute.getName())) {
validator.registerError("Unnamed DbAttribute.", path);
}
else {
MappingNamesHelper helper = MappingNamesHelper.getInstance();
String invalidChars = helper.invalidCharsInDbPathComponent(attribute
.getName());
if (invalidChars != null) {
validator.registerWarning("DbAttribute name contains invalid characters: "
+ invalidChars, path);
}
}
// all attributes must have type
if (attribute.getType() == TypesMapping.NOT_DEFINED) {
validator.registerWarning("DbAttribute has no type.", path);
}
if (attribute instanceof DerivedDbAttribute) {
DerivedDbAttribute derived = (DerivedDbAttribute) attribute;
int paramCount = derived.getParams().size();
String spec = derived.getExpressionSpec();
int paramsExpected = 0;
if (spec != null) {
// count tokens
int ind = -DerivedDbAttribute.ATTRIBUTE_TOKEN.length();
while ((ind = spec.indexOf(DerivedDbAttribute.ATTRIBUTE_TOKEN, ind
+ DerivedDbAttribute.ATTRIBUTE_TOKEN.length())) >= 0) {
paramsExpected++;
}
}
if (paramsExpected != paramCount) {
validator.registerWarning("Derived Attribute's \""
+ attribute.getName()
+ "\" parameter mismatch.", path);
}
}
// VARCHAR and CHAR attributes must have max length
else if (attribute.getMaxLength() < 0
&& (attribute.getType() == java.sql.Types.VARCHAR || attribute.getType() == java.sql.Types.CHAR)) {
validator.registerWarning(
"Character DbAttribute doesn't have max length.",
path);
}
}
}