svn-gvsig-desktop / tags / gvSIGv0_6_1RELEASE / libraries / libRemoteServices / src / org / gvsig / remoteClient / wms / wms_1_1_0 / WMSProtocolHandler1_1_0.java @ 5222
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| 1 | 3687 | ldiaz | |
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| 2 | package org.gvsig.remoteClient.wms.wms_1_1_0; |
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| 3 | |||
| 4 | import java.io.ByteArrayInputStream; |
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| 5 | import java.io.File; |
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| 6 | import java.io.FileNotFoundException; |
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| 7 | import java.io.FileReader; |
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| 8 | import java.io.IOException; |
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| 9 | import java.io.InputStreamReader; |
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| 10 | import java.io.Reader; |
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| 11 | import java.util.ArrayList; |
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| 12 | import java.util.TreeMap; |
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| 13 | import org.gvsig.remoteClient.utils.CapabilitiesTags; |
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| 14 | import org.gvsig.remoteClient.utils.ExceptionTags; |
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| 15 | import org.kxml2.io.KXmlParser; |
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| 16 | import org.xmlpull.v1.XmlPullParserException; |
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| 17 | |||
| 18 | /**
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| 19 | * <p>
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| 20 | * Describes the handler to comunicate to a WMS 1.1.0
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| 21 | * </p>
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| 22 | */
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| 23 | 4036 | ldiaz | public class WMSProtocolHandler1_1_0 extends org.gvsig.remoteClient.wms.WMSProtocolHandler |
| 24 | {
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| 25 | 3687 | ldiaz | private WMSLayer1_1_0 fakeRootLayer;
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| 26 | |||
| 27 | public WMSProtocolHandler1_1_0()
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| 28 | {
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| 29 | this.version = "1.1.0"; |
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| 30 | this.name = "WMS1.1.0"; |
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| 31 | this.serviceInfo = new ServiceInformation(); |
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| 32 | this.layers = new TreeMap(); |
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| 33 | } |
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| 34 | |||
| 35 | //------------------------------------------------------------------------------
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| 36 | // Parsing methods....
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| 37 | //------------------------------------------------------------------------------
|
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| 38 | /**
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| 39 | * <p>Parse the xml data retrieved from the WMS, it will parse the WMS Capabilities</p>
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| 40 | *
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| 41 | */
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| 42 | public void parse(File f) |
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| 43 | {
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| 44 | FileReader reader = null; |
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| 45 | try
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| 46 | {
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| 47 | reader = new FileReader(f); |
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| 48 | } |
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| 49 | catch(FileNotFoundException ex) { |
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| 50 | ex.printStackTrace(); |
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| 51 | } |
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| 52 | |||
| 53 | int tag;
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| 54 | KXmlParser kxmlParser = null;
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| 55 | kxmlParser = new KXmlParser();
|
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| 56 | try
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| 57 | {
|
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| 58 | kxmlParser.setInput(reader); |
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| 59 | kxmlParser.nextTag(); |
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| 60 | if ( kxmlParser.getEventType() != KXmlParser.END_DOCUMENT )
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| 61 | {
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| 62 | kxmlParser.require(KXmlParser.START_TAG, null, CapabilitiesTags.CAPABILITIES_ROOT1_1_1);
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| 63 | tag = kxmlParser.nextTag(); |
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| 64 | while(tag != KXmlParser.END_DOCUMENT)
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| 65 | {
|
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| 66 | switch(tag)
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| 67 | {
|
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| 68 | |||
| 69 | case KXmlParser.START_TAG:
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| 70 | if (kxmlParser.getName().compareTo(CapabilitiesTags.SERVICE )==0) |
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| 71 | {
|
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| 72 | parseServiceTag(kxmlParser); |
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| 73 | } |
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| 74 | else if (kxmlParser.getName().compareTo(CapabilitiesTags.CAPABILITY)==0) |
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| 75 | {
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| 76 | parseCapabilityTag(kxmlParser); |
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| 77 | } |
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| 78 | break;
|
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| 79 | case KXmlParser.END_TAG:
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| 80 | break;
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| 81 | case KXmlParser.TEXT:
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| 82 | 4036 | ldiaz | |
| 83 | 3687 | ldiaz | break;
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| 84 | } |
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| 85 | tag = kxmlParser.next(); |
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| 86 | } |
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| 87 | 4036 | ldiaz | |
| 88 | 3687 | ldiaz | kxmlParser.require(KXmlParser.END_DOCUMENT, null, null); |
| 89 | } |
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| 90 | } |
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| 91 | catch(XmlPullParserException parser_ex){
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| 92 | parser_ex.printStackTrace(); |
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| 93 | } |
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| 94 | catch (IOException ioe) { |
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| 95 | ioe.printStackTrace(); |
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| 96 | } finally {
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| 97 | |||
| 98 | } |
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| 99 | } |
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| 100 | |||
| 101 | /**
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| 102 | * <p>Parses the Service Information </p>
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| 103 | */
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| 104 | private void parseServiceTag(KXmlParser parser) throws IOException, XmlPullParserException |
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| 105 | {
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| 106 | int currentTag;
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| 107 | boolean end = false; |
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| 108 | |||
| 109 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.SERVICE);
|
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| 110 | currentTag = parser.next(); |
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| 111 | |||
| 112 | while (!end)
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| 113 | {
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| 114 | switch(currentTag)
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| 115 | {
|
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| 116 | case KXmlParser.START_TAG:
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| 117 | if (parser.getName().compareTo(CapabilitiesTags.NAME)==0) |
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| 118 | {
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| 119 | serviceInfo.name = parser.nextText(); |
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| 120 | } |
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| 121 | else if (parser.getName().compareTo(CapabilitiesTags.TITLE)==0) |
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| 122 | {
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| 123 | serviceInfo.title = parser.nextText(); |
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| 124 | } |
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| 125 | else if (parser.getName().compareTo(CapabilitiesTags.ABSTRACT)==0) |
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| 126 | {
|
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| 127 | serviceInfo.abstr = parser.nextText(); |
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| 128 | } |
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| 129 | 4019 | ldiaz | else if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
| 130 | {
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| 131 | String value = null; |
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| 132 | value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
|
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| 133 | if (value != null){ |
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| 134 | serviceInfo.online_resource = value; |
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| 135 | } |
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| 136 | } |
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| 137 | 3687 | ldiaz | else if ((parser.getName().compareTo(CapabilitiesTags.KEYWORDLIST)==0) || |
| 138 | (parser.getName().compareTo(CapabilitiesTags.CONTACTINFORMATION)==0))
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| 139 | {
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| 140 | parser.skipSubTree(); |
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| 141 | } |
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| 142 | break;
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| 143 | case KXmlParser.END_TAG:
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| 144 | if (parser.getName().compareTo(CapabilitiesTags.SERVICE) == 0) |
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| 145 | end = true;
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| 146 | break;
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| 147 | case KXmlParser.TEXT:
|
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| 148 | break;
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| 149 | } |
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| 150 | if (!end)
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| 151 | currentTag = parser.next(); |
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| 152 | } |
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| 153 | parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.SERVICE);
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| 154 | } |
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| 155 | /**
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| 156 | * <p>Parses the Capability Tag </p>
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| 157 | */
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| 158 | private void parseCapabilityTag(KXmlParser parser) throws IOException, XmlPullParserException |
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| 159 | {
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| 160 | int currentTag;
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| 161 | boolean end = false; |
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| 162 | |||
| 163 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.CAPABILITY);
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| 164 | currentTag = parser.next(); |
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| 165 | |||
| 166 | while (!end)
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| 167 | {
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| 168 | switch(currentTag)
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| 169 | {
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| 170 | case KXmlParser.START_TAG:
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| 171 | if (parser.getName().compareTo(CapabilitiesTags.REQUEST)==0) |
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| 172 | {
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| 173 | parseRequestTag(parser); |
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| 174 | } |
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| 175 | else if (parser.getName().compareTo(CapabilitiesTags.EXCEPTION)==0) |
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| 176 | {
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| 177 | 4036 | ldiaz | // TODO:
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| 178 | // add the exception formats supported.
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| 179 | 3687 | ldiaz | } |
| 180 | else if (parser.getName().compareTo(CapabilitiesTags.LAYER)==0) |
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| 181 | {
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| 182 | WMSLayer1_1_0 lyr = new WMSLayer1_1_0();
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| 183 | if (rootLayer == null) |
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| 184 | rootLayer = lyr; |
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| 185 | else {
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| 186 | // Handles when there is no general root layer, will use
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| 187 | // a fake non-queryable one.
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| 188 | if (!rootLayer.equals(getFakeRootLayer())){
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| 189 | WMSLayer1_1_0 aux = (WMSLayer1_1_0) rootLayer; |
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| 190 | rootLayer = getFakeRootLayer(); |
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| 191 | rootLayer.getChildren().add(aux); |
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| 192 | } |
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| 193 | rootLayer.getChildren().add(lyr); |
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| 194 | } |
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| 195 | lyr.parse(parser, layers); |
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| 196 | |||
| 197 | if (lyr.getName()!=null) |
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| 198 | 4036 | ldiaz | layers.put(lyr.getName(), lyr); |
| 199 | 3687 | ldiaz | } |
| 200 | else if ((parser.getName().compareTo(CapabilitiesTags.VENDORSPECIFICCAPABILITIES)==0) || |
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| 201 | (parser.getName().compareTo(CapabilitiesTags.USERDEFINEDSYMBOLIZATION )==0))
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| 202 | |||
| 203 | {
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| 204 | parser.skipSubTree(); |
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| 205 | } |
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| 206 | break;
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| 207 | case KXmlParser.END_TAG:
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| 208 | if (parser.getName().compareTo(CapabilitiesTags.CAPABILITY) == 0) |
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| 209 | end = true;
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| 210 | break;
|
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| 211 | case KXmlParser.TEXT:
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| 212 | break;
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| 213 | } |
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| 214 | 4049 | ldiaz | if (!end)
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| 215 | 3687 | ldiaz | currentTag = parser.next(); |
| 216 | } |
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| 217 | //parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.CAPABILITY);
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| 218 | } |
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| 219 | |||
| 220 | /**
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| 221 | * <p>Parses the Request tag </p>
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| 222 | */
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| 223 | private void parseRequestTag(KXmlParser parser) throws IOException, XmlPullParserException |
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| 224 | {
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| 225 | int currentTag;
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| 226 | boolean end = false; |
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| 227 | |||
| 228 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.REQUEST);
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| 229 | currentTag = parser.next(); |
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| 230 | |||
| 231 | while (!end)
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| 232 | {
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| 233 | switch(currentTag)
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| 234 | {
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| 235 | case KXmlParser.START_TAG:
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| 236 | if (parser.getName().compareTo(CapabilitiesTags.GETCAPABILITIES)==0) |
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| 237 | {
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| 238 | 4036 | ldiaz | serviceInfo.operations.put(CapabilitiesTags.GETCAPABILITIES , null);
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| 239 | 3687 | ldiaz | } |
| 240 | else if (parser.getName().compareTo(CapabilitiesTags.GETMAP)==0) |
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| 241 | 4036 | ldiaz | {
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| 242 | serviceInfo.operations.put(CapabilitiesTags.GETMAP, null);
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| 243 | 4019 | ldiaz | parseGetMapTag(parser); |
| 244 | 3687 | ldiaz | } |
| 245 | else if (parser.getName().compareTo(CapabilitiesTags.GETFEATUREINFO)==0) |
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| 246 | {
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| 247 | 4036 | ldiaz | serviceInfo.operations.put(CapabilitiesTags.GETFEATUREINFO, null);
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| 248 | 4019 | ldiaz | parseGetFeatureInfoTag(parser); |
| 249 | 3687 | ldiaz | } |
| 250 | else if (parser.getName().compareTo(CapabilitiesTags.DESCRIBELAYER)==0) |
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| 251 | {
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| 252 | 4036 | ldiaz | serviceInfo.operations.put(CapabilitiesTags.DESCRIBELAYER, null);
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| 253 | 3687 | ldiaz | } |
| 254 | break;
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| 255 | case KXmlParser.END_TAG:
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| 256 | if (parser.getName().compareTo(CapabilitiesTags.REQUEST) == 0) |
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| 257 | end = true;
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| 258 | break;
|
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| 259 | case KXmlParser.TEXT:
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| 260 | break;
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| 261 | } |
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| 262 | 4049 | ldiaz | if(!end)
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| 263 | currentTag = parser.next(); |
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| 264 | 3687 | ldiaz | } |
| 265 | // TODO: does not get such a tag when arrives here!!!!!!
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| 266 | //parser.require(KXmlParser.END_TAG, null, CapabilitiesTags.REQUEST);
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| 267 | } |
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| 268 | |||
| 269 | 4019 | ldiaz | /**
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| 270 | * <p>Parses the GetMap tag </p>
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| 271 | */
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| 272 | private void parseGetMapTag(KXmlParser parser) throws IOException, XmlPullParserException |
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| 273 | {
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| 274 | int currentTag;
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| 275 | boolean end = false; |
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| 276 | |||
| 277 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.GETMAP);
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| 278 | currentTag = parser.next(); |
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| 279 | |||
| 280 | while (!end)
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| 281 | {
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| 282 | switch(currentTag)
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| 283 | {
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| 284 | case KXmlParser.START_TAG:
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| 285 | if (parser.getName().compareTo(CapabilitiesTags.FORMAT)==0) |
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| 286 | {
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| 287 | serviceInfo.formats.add(parser.nextText()); |
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| 288 | } |
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| 289 | else if (parser.getName().compareTo(CapabilitiesTags.DCPTYPE)==0) |
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| 290 | {
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| 291 | currentTag = parser.nextTag(); |
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| 292 | if(parser.getName().compareTo(CapabilitiesTags.HTTP)==0) |
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| 293 | {
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| 294 | currentTag = parser.nextTag(); |
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| 295 | if(parser.getName().compareTo(CapabilitiesTags.GET)==0) |
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| 296 | {
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| 297 | currentTag = parser.nextTag(); |
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| 298 | if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
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| 299 | {
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| 300 | String value = new String(); |
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| 301 | value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
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| 302 | if (value != null){ |
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| 303 | 4036 | ldiaz | serviceInfo.operations.put(CapabilitiesTags.GETMAP, value); |
| 304 | 4019 | ldiaz | } |
| 305 | } |
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| 306 | } |
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| 307 | } |
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| 308 | } |
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| 309 | break;
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| 310 | case KXmlParser.END_TAG:
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| 311 | if (parser.getName().compareTo(CapabilitiesTags.GETMAP) == 0) |
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| 312 | end = true;
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| 313 | break;
|
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| 314 | case KXmlParser.TEXT:
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| 315 | break;
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| 316 | } |
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| 317 | 4049 | ldiaz | if(!end)
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| 318 | currentTag = parser.next(); |
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| 319 | 4019 | ldiaz | } |
| 320 | } |
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| 321 | |||
| 322 | /**
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| 323 | * <p>Parses the GetMap tag </p>
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| 324 | */
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| 325 | private void parseGetFeatureInfoTag(KXmlParser parser) throws IOException, XmlPullParserException |
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| 326 | {
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| 327 | int currentTag;
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| 328 | boolean end = false; |
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| 329 | |||
| 330 | parser.require(KXmlParser.START_TAG, null, CapabilitiesTags.GETFEATUREINFO);
|
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| 331 | currentTag = parser.next(); |
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| 332 | |||
| 333 | while (!end)
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| 334 | {
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| 335 | switch(currentTag)
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| 336 | {
|
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| 337 | case KXmlParser.START_TAG:
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| 338 | if (parser.getName().compareTo(CapabilitiesTags.FORMAT)==0) |
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| 339 | {
|
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| 340 | //TODO:
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| 341 | // add the supported formats by the GetFeatureInfo request
|
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| 342 | //serviceInfo.formats.add(parser.nextText());
|
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| 343 | } |
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| 344 | else if (parser.getName().compareTo(CapabilitiesTags.DCPTYPE)==0) |
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| 345 | {
|
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| 346 | currentTag = parser.nextTag(); |
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| 347 | if(parser.getName().compareTo(CapabilitiesTags.HTTP)==0) |
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| 348 | {
|
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| 349 | currentTag = parser.nextTag(); |
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| 350 | if(parser.getName().compareTo(CapabilitiesTags.GET)==0) |
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| 351 | {
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| 352 | currentTag = parser.nextTag(); |
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| 353 | if (parser.getName().compareTo(CapabilitiesTags.ONLINERESOURCE)==0) |
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| 354 | {
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| 355 | String value = new String(); |
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| 356 | value = parser.getAttributeValue("", CapabilitiesTags.XLINK_HREF);
|
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| 357 | if (value != null){ |
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| 358 | 5073 | jaume | serviceInfo.operations.put(CapabilitiesTags.GETFEATUREINFO, value); |
| 359 | 4019 | ldiaz | } |
| 360 | } |
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| 361 | } |
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| 362 | } |
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| 363 | } |
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| 364 | break;
|
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| 365 | case KXmlParser.END_TAG:
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| 366 | if (parser.getName().compareTo(CapabilitiesTags.GETFEATUREINFO) == 0) |
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| 367 | end = true;
|
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| 368 | break;
|
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| 369 | case KXmlParser.TEXT:
|
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| 370 | break;
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| 371 | } |
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| 372 | 4049 | ldiaz | if(!end)
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| 373 | currentTag = parser.next(); |
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| 374 | 4019 | ldiaz | } |
| 375 | } |
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| 376 | |||
| 377 | 3687 | ldiaz | private WMSLayer1_1_0 getFakeRootLayer(){
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| 378 | if (fakeRootLayer == null){ |
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| 379 | fakeRootLayer = new WMSLayer1_1_0();
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| 380 | fakeRootLayer.setTitle(serviceInfo.title); |
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| 381 | fakeRootLayer.setQueryable(false);
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| 382 | fakeRootLayer.setName(null);
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| 383 | } |
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| 384 | return fakeRootLayer;
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| 385 | } |
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| 386 | /* (non-Javadoc)
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| 387 | * @see org.gvsig.remoteClient.wms.WMSProtocolHandler#parseException(byte[])
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| 388 | */
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| 389 | protected String parseException(byte[] data) { |
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| 390 | ArrayList errors = new ArrayList(); |
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| 391 | KXmlParser kxmlParser = new KXmlParser();
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| 392 | Reader reader = new InputStreamReader(new ByteArrayInputStream(data)); |
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| 393 | try
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| 394 | {
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| 395 | kxmlParser.setInput(reader); |
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| 396 | kxmlParser.nextTag(); |
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| 397 | int tag;
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| 398 | if ( kxmlParser.getEventType() != KXmlParser.END_DOCUMENT )
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| 399 | {
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| 400 | kxmlParser.require(KXmlParser.START_TAG, null, ExceptionTags.EXCEPTION_ROOT);
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| 401 | tag = kxmlParser.nextTag(); |
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| 402 | while(tag != KXmlParser.END_DOCUMENT)
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| 403 | {
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| 404 | switch(tag)
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| 405 | {
|
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| 406 | case KXmlParser.START_TAG:
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| 407 | if (kxmlParser.getName().compareTo(ExceptionTags.SERVICE_EXCEPTION)==0){ |
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| 408 | String errorCode = kxmlParser.getAttributeValue("", ExceptionTags.CODE); |
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| 409 | errorCode = (errorCode != null) ? "["+errorCode+"] " : ""; |
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| 410 | String errorMessage = kxmlParser.nextText();
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| 411 | errors.add(errorCode+errorMessage); |
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| 412 | } |
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| 413 | break;
|
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| 414 | case KXmlParser.END_TAG:
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| 415 | break;
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| 416 | |||
| 417 | } |
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| 418 | tag = kxmlParser.nextTag(); |
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| 419 | } |
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| 420 | //kxmlParser.require(KXmlParser.END_DOCUMENT, null, null);
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| 421 | } |
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| 422 | } |
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| 423 | catch(XmlPullParserException parser_ex){
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| 424 | System.out.println(parser_ex.getMessage());
|
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| 425 | parser_ex.printStackTrace(); |
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| 426 | } |
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| 427 | catch (IOException ioe) { |
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| 428 | ioe.printStackTrace(); |
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| 429 | } |
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| 430 | String message = errors.size()>0? "" : null; |
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| 431 | for (int i = 0; i < errors.size(); i++) { |
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| 432 | message += (String) errors.get(i)+"\n"; |
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| 433 | } |
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| 434 | return message;
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| 435 | } |
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| 436 | |||
| 437 | } |