/*
 * Copyright 2010 Red Hat, Inc. and/or its affiliates.
 *
 * 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.jbpm.compiler.xml.core;

import java.util.Set;

import org.jbpm.compiler.xml.Parser;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;

public abstract class BaseAbstractHandler {
    protected Set<Class<?>> validPeers;
    protected Set<Class<?>> validParents;
    protected boolean allowNesting;

    public Set<Class<?>> getValidParents() {
        return this.validParents;
    }

    public Set<Class<?>> getValidPeers() {
        return this.validPeers;
    }

    public boolean allowNesting() {
        return this.allowNesting;
    }

    public void emptyAttributeCheck(final String element,
            final String attributeName,
            final String attribute,
            final Parser xmlPackageReader) throws SAXException {
        if (attribute == null || attribute.trim().equals("")) {
            throw new SAXParseException("<" + element + "> requires a '" + attributeName + "' attribute",
                    xmlPackageReader.getLocator());
        }
    }

    public void emptyContentCheck(final String element,
            final String content,
            final Parser xmlPackageReader) throws SAXException {
        if (content == null || content.trim().equals("")) {
            throw new SAXParseException("<" + element + "> requires content",
                    xmlPackageReader.getLocator());
        }
    }
}
