| /** |
| * Licensed to jclouds, Inc. (jclouds) under one or more |
| * contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. jclouds 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 |
| * under the License. |
| */ |
| package org.jclouds.deltacloud.xml; |
| |
| import java.net.URI; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.regex.Pattern; |
| |
| import org.jclouds.deltacloud.domain.EnumHardwareProperty; |
| import org.jclouds.deltacloud.domain.FixedHardwareProperty; |
| import org.jclouds.deltacloud.domain.HardwareParameter; |
| import org.jclouds.deltacloud.domain.HardwareProperty; |
| import org.jclouds.deltacloud.domain.RangeHardwareProperty; |
| import org.jclouds.deltacloud.domain.HardwareProperty.Kind; |
| import org.jclouds.http.functions.ParseSax; |
| import org.jclouds.javax.annotation.Nullable; |
| import org.jclouds.util.SaxUtils; |
| import org.xml.sax.Attributes; |
| import org.xml.sax.SAXException; |
| |
| import com.google.common.collect.Sets; |
| |
| /** |
| * @author Adrian Cole |
| */ |
| public class HardwarePropertyHandler extends ParseSax.HandlerWithResult<HardwareProperty> { |
| private Kind kind; |
| private String name; |
| private String unit; |
| private Object value; |
| private HardwareParameter param; |
| private Set<Object> availableValues = Sets.newLinkedHashSet(); |
| private Number first; |
| private Number last; |
| |
| /** |
| * resets state of the handler when called. |
| * |
| * @return property or null |
| */ |
| public HardwareProperty getResult() { |
| try { |
| switch (kind) { |
| case FIXED: |
| return new FixedHardwareProperty(name, unit, value); |
| case ENUM: |
| return new EnumHardwareProperty(name, unit, value, param, availableValues); |
| case RANGE: |
| return new RangeHardwareProperty(name, unit, (Number) value, param, first, last); |
| default: |
| return null; |
| } |
| } finally { |
| this.kind = null; |
| this.name = null; |
| this.unit = null; |
| this.value = null; |
| this.param = null; |
| this.availableValues = Sets.newLinkedHashSet(); |
| this.first = null; |
| this.last = null; |
| } |
| } |
| |
| private static final Pattern LONG = Pattern.compile("^[0-9]+$"); |
| private static final Pattern DOUBLE = Pattern.compile("^[0-9]+\\.[0-9]+$"); |
| |
| public static @Nullable |
| Number parseNumberOrNull(String in) { |
| if (DOUBLE.matcher(in).matches()) |
| return new Double(in); |
| else if (LONG.matcher(in).matches()) |
| return Long.valueOf(in); |
| return null; |
| } |
| |
| @Override |
| public void startElement(String uri, String localName, String qName, Attributes attrs) throws SAXException { |
| Map<String, String> attributes = SaxUtils.cleanseAttributes(attrs); |
| if (qName.equals("property")) { |
| this.kind = Kind.fromValue(attributes.get("kind")); |
| this.name = attributes.get("name"); |
| this.unit = attributes.get("unit"); |
| if (attributes.containsKey("value")) { |
| this.value = stringOrNumber(attributes.get("value")); |
| } |
| } else if (qName.equals("param")) { |
| this.param = new HardwareParameter(URI.create(attributes.get("href")), attributes.get("method"), |
| attributes.get("name"), attributes.get("operation")); |
| } else if (qName.equals("range")) { |
| this.first = parseNumberOrNull(attributes.get("first")); |
| this.last = parseNumberOrNull(attributes.get("last")); |
| } else if (qName.equals("entry")) { |
| this.availableValues.add(stringOrNumber(attributes.get("value"))); |
| } |
| } |
| |
| public static Object stringOrNumber(String in) { |
| Number number = parseNumberOrNull(in); |
| return number != null ? number : in; |
| } |
| } |