com.terradue.jcatalogue.client.internal.digester.PriorityParamRule.java Source code

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Here is the source code for com.terradue.jcatalogue.client.internal.digester.PriorityParamRule.java

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package com.terradue.jcatalogue.client.internal.digester;

/*
 *    Copyright 2011-2012 Terradue srl
 *
 *    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.
 */

import org.apache.commons.digester3.Rule;
import org.apache.commons.digester3.binder.RuleProvider;
import org.xml.sax.Attributes;

final class PriorityParamRule extends Rule {

    private static final Integer MIN_PRIORITY = 999999;

    private final int paramIndex;

    private PriorityParamRule(int paramIndex) {
        this.paramIndex = paramIndex;
    }

    @Override
    public void begin(String namespace, String name, Attributes attributes) throws Exception {
        Integer priority = MIN_PRIORITY;
        String priorityValue = attributes.getValue("urn:ietf:params:xml:ns:metalink", "priority");

        if (priorityValue != null) {
            priority = Integer.valueOf(priorityValue);
        }

        getDigester().peekParams()[paramIndex] = priority;
    }

    public static final class PriorityParamRuleProvider implements RuleProvider<PriorityParamRule> {

        private final int paramIndex;

        public PriorityParamRuleProvider(int paramIndex) {
            this.paramIndex = paramIndex;
        }

        @Override
        public PriorityParamRule get() {
            return new PriorityParamRule(paramIndex);
        }

    }

}