/**
* Copyright 2006-2016 the original author or authors.
*
* Licensed 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 under the License.
*/
package org.mybatis.generator.api.dom.java;
public class JavaDomUtils {
/**
* Calculates type names for writing into generated Java. We try to
* use short names wherever possible. If the type requires an import,
* but has not been imported, then we need to use the fully qualified
* type name.
*
* @param compilationUnit the compilation unit being written
* @param fqjt the type in question
*/
public static String calculateTypeName(CompilationUnit compilationUnit, FullyQualifiedJavaType fqjt) {
if (fqjt.getTypeArguments().size() > 0) {
return calculateParameterizedTypeName(compilationUnit, fqjt);
}
if(compilationUnit == null
|| typeDoesNotRequireImport(fqjt)
|| typeIsInSamePackage(compilationUnit, fqjt)
|| typeIsAlreadyImported(compilationUnit, fqjt)) {
return fqjt.getShortName();
} else {
return fqjt.getFullyQualifiedName();
}
}
private static String calculateParameterizedTypeName(CompilationUnit compilationUnit, FullyQualifiedJavaType fqjt) {
StringBuilder sb = new StringBuilder();
sb.append(calculateTypeName(compilationUnit, new FullyQualifiedJavaType(fqjt.getFullyQualifiedNameWithoutTypeParameters())));
sb.append('<');
boolean comma = false;
for (FullyQualifiedJavaType ft : fqjt.getTypeArguments()) {
if (comma) {
sb.append(", ");
} else {
comma = true;
}
sb.append(calculateTypeName(compilationUnit, ft));
}
sb.append('>');
return sb.toString();
}
private static boolean typeDoesNotRequireImport(FullyQualifiedJavaType fullyQualifiedJavaType) {
return fullyQualifiedJavaType.isPrimitive()
|| !fullyQualifiedJavaType.isExplicitlyImported();
}
private static boolean typeIsInSamePackage(CompilationUnit compilationUnit, FullyQualifiedJavaType fullyQualifiedJavaType) {
return fullyQualifiedJavaType.getPackageName().equals(compilationUnit.getType().getPackageName());
}
private static boolean typeIsAlreadyImported(CompilationUnit compilationUnit, FullyQualifiedJavaType fullyQualifiedJavaType) {
FullyQualifiedJavaType nonGenericType = new FullyQualifiedJavaType(fullyQualifiedJavaType.getFullyQualifiedNameWithoutTypeParameters());
return compilationUnit.getImportedTypes().contains(nonGenericType);
}
}