| 1 | package org.farng.mp3.object; |
| 2 | |
| 3 | import org.farng.mp3.TagConstant; |
| 4 | |
| 5 | import java.util.HashMap; |
| 6 | import java.util.Iterator; |
| 7 | import java.util.TreeSet; |
| 8 | |
| 9 | /** |
| 10 | * ID3v2 and Lyrics3v2 tags have individual fields <code>AbstractMP3Fragment</code>s Then each fragment is broken down |
| 11 | * in to individual <code>AbstractMP3Object</code>s |
| 12 | * |
| 13 | * @author Eric Farng |
| 14 | * @version $Revision: 1.4 $ |
| 15 | */ |
| 16 | public class ObjectNumberHashMap extends ObjectNumberFixedLength implements ObjectHashMapInterface { |
| 17 | |
| 18 | public static final String GENRE = "Genre"; |
| 19 | public static final String TEXT_ENCODING = "Text Encoding"; |
| 20 | public static final String INTERPOLATION_METHOD = "Interpolation Method"; |
| 21 | public static final String ID3V2_FRAME_DESCRIPTION = "ID3v2 Frame Description"; |
| 22 | public static final String PICTURE_TYPE = "Picture Type"; |
| 23 | public static final String TYPE_OF_EVENT = "Type Of Event"; |
| 24 | public static final String TIME_STAMP_FORMAT = "Time Stamp Format"; |
| 25 | public static final String TYPE_OF_CHANNEL = "Type Of Channel"; |
| 26 | public static final String RECIEVED_AS = "Recieved As"; |
| 27 | private HashMap idToString = null; |
| 28 | private HashMap stringToId = null; |
| 29 | private boolean hasEmptyValue = false; |
| 30 | |
| 31 | /** |
| 32 | * Creates a new ObjectNumberHashMap object. |
| 33 | */ |
| 34 | public ObjectNumberHashMap(final String identifier, final int size) { |
| 35 | super(identifier, size); |
| 36 | if (identifier.equals(ObjectNumberHashMap.GENRE)) { |
| 37 | this.stringToId = TagConstant.genreStringToId; |
| 38 | this.idToString = TagConstant.genreIdToString; |
| 39 | this.hasEmptyValue = true; |
| 40 | } else if (identifier.equals(ObjectNumberHashMap.TEXT_ENCODING)) { |
| 41 | this.stringToId = TagConstant.textEncodingStringToId; |
| 42 | this.idToString = TagConstant.textEncodingIdToString; |
| 43 | } else if (identifier.equals(ObjectNumberHashMap.INTERPOLATION_METHOD)) { |
| 44 | this.stringToId = TagConstant.interpolationMethodStringToId; |
| 45 | this.idToString = TagConstant.interpolationMethodIdToString; |
| 46 | } else if (identifier.equals(ObjectNumberHashMap.ID3V2_FRAME_DESCRIPTION)) { |
| 47 | this.stringToId = TagConstant.id3v2_4FrameStringToId; |
| 48 | this.idToString = TagConstant.id3v2_4FrameIdToString; |
| 49 | } else if (identifier.equals(ObjectNumberHashMap.PICTURE_TYPE)) { |
| 50 | this.stringToId = TagConstant.pictureTypeStringToId; |
| 51 | this.idToString = TagConstant.pictureTypeIdToString; |
| 52 | } else if (identifier.equals(ObjectNumberHashMap.TYPE_OF_EVENT)) { |
| 53 | this.stringToId = TagConstant.typeOfEventStringToId; |
| 54 | this.idToString = TagConstant.typeOfEventIdToString; |
| 55 | } else if (identifier.equals(ObjectNumberHashMap.TIME_STAMP_FORMAT)) { |
| 56 | this.stringToId = TagConstant.timeStampFormatStringToId; |
| 57 | this.idToString = TagConstant.timeStampFormatIdToString; |
| 58 | } else if (identifier.equals(ObjectNumberHashMap.TYPE_OF_CHANNEL)) { |
| 59 | this.stringToId = TagConstant.typeOfChannelStringToId; |
| 60 | this.idToString = TagConstant.typeOfChannelIdToString; |
| 61 | } else if (identifier.equals(ObjectNumberHashMap.RECIEVED_AS)) { |
| 62 | this.stringToId = TagConstant.recievedAsStringToId; |
| 63 | this.idToString = TagConstant.recievedAsIdToString; |
| 64 | } else { |
| 65 | throw new IllegalArgumentException("Hashmap identifier not defined in this class: " + identifier); |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * Creates a new ObjectNumberHashMap object. |
| 71 | */ |
| 72 | public ObjectNumberHashMap(final ObjectNumberHashMap copyObject) { |
| 73 | super(copyObject); |
| 74 | this.hasEmptyValue = copyObject.hasEmptyValue; |
| 75 | |
| 76 | // we dont' need to clone/copy the maps here because they are static |
| 77 | this.idToString = copyObject.idToString; |
| 78 | this.stringToId = copyObject.stringToId; |
| 79 | } |
| 80 | |
| 81 | public HashMap getIdToString() { |
| 82 | return this.idToString; |
| 83 | } |
| 84 | |
| 85 | public HashMap getStringToId() { |
| 86 | return this.stringToId; |
| 87 | } |
| 88 | |
| 89 | public void setValue(final Object value) { |
| 90 | if (value instanceof Byte) { |
| 91 | this.value = new Long(((Byte) value).byteValue()); |
| 92 | } else if (value instanceof Short) { |
| 93 | this.value = new Long(((Short) value).shortValue()); |
| 94 | } else if (value instanceof Integer) { |
| 95 | this.value = new Long(((Integer) value).intValue()); |
| 96 | } else { |
| 97 | this.value = value; |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | public boolean equals(final Object obj) { |
| 102 | if ((obj instanceof ObjectNumberHashMap) == false) { |
| 103 | return false; |
| 104 | } |
| 105 | final ObjectNumberHashMap objectNumberHashMap = (ObjectNumberHashMap) obj; |
| 106 | if (this.hasEmptyValue != objectNumberHashMap.hasEmptyValue) { |
| 107 | return false; |
| 108 | } |
| 109 | if (this.idToString == null) { |
| 110 | if (objectNumberHashMap.idToString != null) { |
| 111 | return false; |
| 112 | } |
| 113 | } else { |
| 114 | if (this.idToString.equals(objectNumberHashMap.idToString) == false) { |
| 115 | return false; |
| 116 | } |
| 117 | } |
| 118 | if (this.stringToId == null) { |
| 119 | if (objectNumberHashMap.stringToId != null) { |
| 120 | return false; |
| 121 | } |
| 122 | } else { |
| 123 | if (this.stringToId.equals(objectNumberHashMap.stringToId) == false) { |
| 124 | return false; |
| 125 | } |
| 126 | } |
| 127 | return super.equals(obj); |
| 128 | } |
| 129 | |
| 130 | public Iterator iterator() { |
| 131 | if (this.idToString == null) { |
| 132 | return null; |
| 133 | } |
| 134 | |
| 135 | // put them in a treeset first to sort them |
| 136 | final TreeSet treeSet = new TreeSet(this.idToString.values()); |
| 137 | if (this.hasEmptyValue) { |
| 138 | treeSet.add(""); |
| 139 | } |
| 140 | return treeSet.iterator(); |
| 141 | } |
| 142 | |
| 143 | public String toString() { |
| 144 | if (this.value == null) { |
| 145 | return ""; |
| 146 | } else if (this.idToString.get(this.value) == null) { |
| 147 | return ""; |
| 148 | } else { |
| 149 | return this.idToString.get(this.value).toString(); |
| 150 | } |
| 151 | } |
| 152 | } |