svn-gvsig-desktop / trunk / libraries / libRemoteServices / src / org / gvsig / remoteClient / wfs / filters / FilterEncoding.java @ 10563
History | View | Annotate | Download (10.4 KB)
| 1 |
|
|---|---|
| 2 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
| 3 |
*
|
| 4 |
* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
|
| 5 |
*
|
| 6 |
* This program is free software; you can redistribute it and/or
|
| 7 |
* modify it under the terms of the GNU General Public License
|
| 8 |
* as published by the Free Software Foundation; either version 2
|
| 9 |
* of the License, or (at your option) any later version.
|
| 10 |
*
|
| 11 |
* This program is distributed in the hope that it will be useful,
|
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 14 |
* GNU General Public License for more details.
|
| 15 |
*
|
| 16 |
* You should have received a copy of the GNU General Public License
|
| 17 |
* along with this program; if not, write to the Free Software
|
| 18 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
| 19 |
*
|
| 20 |
* For more information, contact:
|
| 21 |
*
|
| 22 |
* Generalitat Valenciana
|
| 23 |
* Conselleria d'Infraestructures i Transport
|
| 24 |
* Av. Blasco Ib??ez, 50
|
| 25 |
* 46010 VALENCIA
|
| 26 |
* SPAIN
|
| 27 |
*
|
| 28 |
* +34 963862235
|
| 29 |
* gvsig@gva.es
|
| 30 |
* www.gvsig.gva.es
|
| 31 |
*
|
| 32 |
* or
|
| 33 |
*
|
| 34 |
* IVER T.I. S.A
|
| 35 |
* Salamanca 50
|
| 36 |
* 46005 Valencia
|
| 37 |
* Spain
|
| 38 |
*
|
| 39 |
* +34 963163400
|
| 40 |
* dac@iver.es
|
| 41 |
*/
|
| 42 |
package org.gvsig.remoteClient.wfs.filters; |
| 43 |
import java.util.Hashtable; |
| 44 |
|
| 45 |
import org.gvsig.remoteClient.gml.utils.GMLObjectsFactory; |
| 46 |
import org.gvsig.remoteClient.wfs.filters.BinaryTree.Node; |
| 47 |
|
| 48 |
import sun.security.action.GetBooleanAction; |
| 49 |
|
| 50 |
/**
|
| 51 |
* This class implements the Filter Encoding Language. It is used to
|
| 52 |
* create querys in this language
|
| 53 |
*
|
| 54 |
* Name: OpenGIS? Filter Encoding Implementation Specification
|
| 55 |
* Version: 1.1.0
|
| 56 |
* Project Document: OGC 04-095
|
| 57 |
* @see http://portal.opengeospatial.org/files/?artifact_id=8340
|
| 58 |
*
|
| 59 |
* @author Jorge Piera Llodra (piera_jor@gva.es)
|
| 60 |
*/
|
| 61 |
public class FilterEncoding extends AFilter { |
| 62 |
public static final int RELATIONSHIP_PROPERTY = 0; |
| 63 |
public static final int RELATIONSHIP_VAUES = 1; |
| 64 |
|
| 65 |
private StringBuffer currentQuery = null; |
| 66 |
|
| 67 |
/**
|
| 68 |
* Operation types
|
| 69 |
*/
|
| 70 |
private static final int OPERATION_PROPERTYNAME = 0; |
| 71 |
private static final int OPERATION_LITERAL = 1; |
| 72 |
|
| 73 |
/**
|
| 74 |
* Filter namespace. (typically "ogc")
|
| 75 |
*/
|
| 76 |
private String nameSpace = null; |
| 77 |
|
| 78 |
/**
|
| 79 |
* This character must be replaced by any set of characters (typically "*")
|
| 80 |
*/
|
| 81 |
private String wildCardChar = null; |
| 82 |
|
| 83 |
/**
|
| 84 |
* This character must be replaced by one character (typically "?")
|
| 85 |
*/
|
| 86 |
private String singleChar = null; |
| 87 |
|
| 88 |
/**
|
| 89 |
* Escape character (typically "\")
|
| 90 |
*/
|
| 91 |
private String escapeChar = null; |
| 92 |
|
| 93 |
private Hashtable filterAttributes = new Hashtable(); |
| 94 |
|
| 95 |
|
| 96 |
/**
|
| 97 |
* Create a new Filter Encoding Parser
|
| 98 |
*
|
| 99 |
*
|
| 100 |
* @param nameSpace
|
| 101 |
* Filter namespace. (typically "ogc")
|
| 102 |
* @param wildCardChar
|
| 103 |
* This character must be replaced by any set of characters (typically "*")
|
| 104 |
* @param singleChar
|
| 105 |
* This character must be replaced by one character (typically "?")
|
| 106 |
* @param escape
|
| 107 |
* Escape character
|
| 108 |
* @param filterAttribute Sometimes, "Field" label needs an attribute.
|
| 109 |
*/
|
| 110 |
public FilterEncoding(ISQLExpressionFormat formatter,String prefix, String wildCard, String singleChar, String escape, Hashtable filterAttributes) { |
| 111 |
super(formatter);
|
| 112 |
if (prefix == null){ |
| 113 |
this.nameSpace = ""; |
| 114 |
}else{
|
| 115 |
this.nameSpace = prefix + ":"; |
| 116 |
} |
| 117 |
this.wildCardChar = wildCard;
|
| 118 |
this.singleChar = singleChar;
|
| 119 |
this.escapeChar = escape;
|
| 120 |
this.filterAttributes = filterAttributes;
|
| 121 |
} |
| 122 |
|
| 123 |
|
| 124 |
/**
|
| 125 |
* Create a new Filter Encoding Parser
|
| 126 |
* @param formatter
|
| 127 |
*/
|
| 128 |
public FilterEncoding(ISQLExpressionFormat formatter) {
|
| 129 |
super(formatter);
|
| 130 |
this.nameSpace = ""; |
| 131 |
this.wildCardChar = "*"; |
| 132 |
this.singleChar = "?"; |
| 133 |
this.escapeChar = "\\"; |
| 134 |
this.filterAttributes = new Hashtable(); |
| 135 |
} |
| 136 |
|
| 137 |
/*
|
| 138 |
* (non-Javadoc)
|
| 139 |
* @see org.gvsig.remoteClient.filterEncoding.QueryLanguage#toString(org.gvsig.remoteClient.filterEncoding.BinaryTree)
|
| 140 |
*/
|
| 141 |
protected String toString(BinaryTree tree) { |
| 142 |
if ((tree.getRoot() == null) && (getBbox() == null)){ |
| 143 |
return null; |
| 144 |
} |
| 145 |
String filterQuery = null; |
| 146 |
String bboxQuery = null; |
| 147 |
if (tree.getRoot() != null){ |
| 148 |
currentQuery = new StringBuffer(); |
| 149 |
filterQuery = getFilterNode(tree.getRoot()); |
| 150 |
if (getBbox() == null){ |
| 151 |
return enclosesWithFilterTag(filterQuery);
|
| 152 |
} |
| 153 |
} |
| 154 |
if (getBbox() != null){ |
| 155 |
bboxQuery = enterLabel(getBboxPropertyName(), "PropertyName");
|
| 156 |
bboxQuery = bboxQuery + new GMLObjectsFactory().createBBOX(getBbox());
|
| 157 |
if (tree.getRoot() == null){ |
| 158 |
return enclosesWithFilterTag(bboxQuery);
|
| 159 |
} |
| 160 |
} |
| 161 |
//filterQuery = enterLabel(filterQuery, "Within");
|
| 162 |
return enclosesWithFilterTag(filterQuery);
|
| 163 |
} |
| 164 |
|
| 165 |
/**
|
| 166 |
* Gets the filter code from a node
|
| 167 |
* @param node
|
| 168 |
*/
|
| 169 |
private String getFilterNode(Node node){ |
| 170 |
if (node.isField()){
|
| 171 |
return getExpression(node.getValue());
|
| 172 |
}else{
|
| 173 |
String left = ""; |
| 174 |
String rigth = ""; |
| 175 |
if (node.getLeftNode() != null){ |
| 176 |
left = getFilterNode(node.getLeftNode()); |
| 177 |
} |
| 178 |
if (node.getRigthNode() != null){ |
| 179 |
rigth = getFilterNode(node.getRigthNode()); |
| 180 |
} |
| 181 |
int operationCode = getLogicalOperator(node.getValue());
|
| 182 |
String operation = getLogicalOperator(operationCode);
|
| 183 |
return enterLabel(left+rigth, operation);
|
| 184 |
} |
| 185 |
} |
| 186 |
|
| 187 |
/**
|
| 188 |
* Parses a expresion like 'A op B' and returns the
|
| 189 |
* expresion using the filter encoding language
|
| 190 |
* @param expression
|
| 191 |
* @return
|
| 192 |
*/
|
| 193 |
private String getExpression(String expression){ |
| 194 |
String[] words = expression.split(" "); |
| 195 |
//Param
|
| 196 |
String param = words[0]; |
| 197 |
if (param.charAt(0) == '"'){ |
| 198 |
param = param.substring(1,param.length());
|
| 199 |
} |
| 200 |
if (param.charAt(param.length()-1) == '"'){ |
| 201 |
param = param.substring(0,param.length()-1); |
| 202 |
} |
| 203 |
//Operator
|
| 204 |
String operator = words[1]; |
| 205 |
//Value
|
| 206 |
String value = words[2]; |
| 207 |
for (int i=3 ; i<words.length ; i++){ |
| 208 |
value = value + " " + words[i];
|
| 209 |
} |
| 210 |
if (value.charAt(0) == '\''){ |
| 211 |
value = value.substring(1,value.length());
|
| 212 |
} |
| 213 |
if (value.charAt(value.length()-1) == '\''){ |
| 214 |
value = value.substring(0,value.length()-1); |
| 215 |
} |
| 216 |
int operatorCode = getRelationalOperator(operator);
|
| 217 |
operator = getRelationalOperator(operatorCode); |
| 218 |
return createExpression(operator,param,value);
|
| 219 |
} |
| 220 |
|
| 221 |
/**
|
| 222 |
* It writes a "PropertyIsXXX" part of a filtyer encoding query
|
| 223 |
*
|
| 224 |
*
|
| 225 |
* @return The part of the query
|
| 226 |
* @param property Possible Values: PropertIsLike, PropertyIsLess, PropertyIsGreater,... See
|
| 227 |
* the Filter Encoding documentation
|
| 228 |
* @param parameter Parameter name
|
| 229 |
* @param value Parameter value
|
| 230 |
* @param type Values: "P" (to comparate two propertyes) or "L" (to comparate one property
|
| 231 |
* and one literal value)
|
| 232 |
*/
|
| 233 |
private String createExpression(String property, String parameter, String value) { |
| 234 |
String cadena = ""; |
| 235 |
cadena = "<" + nameSpace + property;
|
| 236 |
if (property.equals("PropertyIsLike")) { |
| 237 |
if (wildCardChar != null) { |
| 238 |
cadena = cadena + " wildCard=\"" + this.wildCardChar + "\""; |
| 239 |
} |
| 240 |
if (singleChar != null) { |
| 241 |
cadena = cadena + " singleChar=\"" + this.singleChar + "\""; |
| 242 |
} |
| 243 |
if (escapeChar != null) { |
| 244 |
cadena = cadena + " escape=\"" + this.escapeChar + "\""; |
| 245 |
} |
| 246 |
} |
| 247 |
cadena = cadena + ">" + enterLabel(parameter, "PropertyName"); |
| 248 |
cadena = cadena + enterLabel(value, "Literal");
|
| 249 |
return cadena + "</" + nameSpace + property + ">"; |
| 250 |
} |
| 251 |
|
| 252 |
/**
|
| 253 |
* Envuelve a una pregunta con una etiqueta
|
| 254 |
*
|
| 255 |
*
|
| 256 |
* @return String : parte de la query en el lenguaje soportado
|
| 257 |
* @param pregunta Pregunta a envolver
|
| 258 |
* @param etiqueta Nombre de la etiqueta
|
| 259 |
*/
|
| 260 |
private String enterLabel(String value, String tagName) { |
| 261 |
if (tagName.equals("Filter") && (!(filterAttributes.isEmpty()))) { |
| 262 |
return setTag(tagName,filterAttributes,value);
|
| 263 |
} else {
|
| 264 |
return setTag(tagName,null,value); |
| 265 |
} |
| 266 |
} |
| 267 |
|
| 268 |
/**
|
| 269 |
* Encloses a query with the filter tag
|
| 270 |
* @param query
|
| 271 |
* @return
|
| 272 |
*/
|
| 273 |
private String enclosesWithFilterTag(String query){ |
| 274 |
StringBuffer filter = new StringBuffer(); |
| 275 |
filter.append("<Filter%20");
|
| 276 |
filter.append("xmlns:ogc=\"http://www.opengis.net/ogc\"%20");
|
| 277 |
filter.append("xmlns:gml=\"http://www.opengis.net/gml\"%20");
|
| 278 |
filter.append("xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" ");
|
| 279 |
filter.append("xsi:schemaLocation=\"http://www.opengis.net/ogc%20../filter/1.0.0/filter.xsd%20http://www.opengis.net/gml%20../gml/2.1.2/geometry.xsd\">");
|
| 280 |
filter.append(query); |
| 281 |
filter.append("</Filter>");
|
| 282 |
return filter.toString();
|
| 283 |
} |
| 284 |
|
| 285 |
/*
|
| 286 |
* (non-Javadoc)
|
| 287 |
* @see org.gvsig.remoteClient.filterEncoding.AQueryLanguage#getLogicOperator(int)
|
| 288 |
*/
|
| 289 |
public String getLogicalOperator(int operator) { |
| 290 |
switch (operator){
|
| 291 |
case LOGICAL_OPERATOR_AND:
|
| 292 |
return "And"; |
| 293 |
case LOGICAL_OPERATOR_OR:
|
| 294 |
return "Or"; |
| 295 |
case LOGICAL_OPERATOR_NOT:
|
| 296 |
return "Not"; |
| 297 |
default:
|
| 298 |
return "And"; |
| 299 |
} |
| 300 |
} |
| 301 |
|
| 302 |
/*
|
| 303 |
* (non-Javadoc)
|
| 304 |
* @see org.gvsig.remoteClient.filterEncoding.AQueryLanguage#getRelationalOperator(int)
|
| 305 |
*/
|
| 306 |
public String getRelationalOperator(int operator) { |
| 307 |
switch (operator){
|
| 308 |
case RELATIONAL_OPERATOR_IS_EQUALS_TO:
|
| 309 |
return "PropertyIsEqualTo"; |
| 310 |
case RELATIONAL_OPERATOR_IS_NOT_EQUALS_TO:
|
| 311 |
return "PropertyIsNotEqualTo"; |
| 312 |
case RELATIONAL_OPERATOR_IS_LESS_THAN:
|
| 313 |
return "PropertyIsLessThan"; |
| 314 |
case RELATIONAL_OPERATOR_IS_GREATER_THAN:
|
| 315 |
return "PropertyIsGreaterThan"; |
| 316 |
case RELATIONAL_OPERATOR_IS_LESS_THAN_OR_EQUAL_TO:
|
| 317 |
return "PropertyIsLessThanOrEqualTo"; |
| 318 |
case RELATIONAL_OPERATOR_IS_GREATER_THAN_OR_EQUAL_TO:
|
| 319 |
return "PropertyIsGreaterThanOrEqualTo"; |
| 320 |
case RELATIONAL_OPERATOR_IS_LIKE:
|
| 321 |
return "PropertyIsLike"; |
| 322 |
case RELATIONAL_OPERATOR_IS_NULL:
|
| 323 |
return "PropertyIsNull"; |
| 324 |
case RELATIONAL_OPERATOR_IS_BETWEEN:
|
| 325 |
return "PropertyIsBetween"; |
| 326 |
default:
|
| 327 |
return "PropertyIsLike"; |
| 328 |
} |
| 329 |
} |
| 330 |
|
| 331 |
/*
|
| 332 |
* (non-Javadoc)
|
| 333 |
* @see org.gvsig.remoteClient.filterEncoding.AQueryLanguage#getGeometricOperator(int)
|
| 334 |
*/
|
| 335 |
public String getGeometricOperator(int operator) { |
| 336 |
switch (operator){
|
| 337 |
case GEOMETRIC_OPERATOR_EQUALS:
|
| 338 |
return "Equals"; |
| 339 |
case GEOMETRIC_OPERATOR_DISJOINT:
|
| 340 |
return "Disjoint"; |
| 341 |
case GEOMETRIC_OPERATOR_TOUCHES:
|
| 342 |
return "Touches"; |
| 343 |
case GEOMETRIC_OPERATOR_WITHIN:
|
| 344 |
return "Within"; |
| 345 |
case GEOMETRIC_OPERATOR_OVERLAPS:
|
| 346 |
return "Overlaps"; |
| 347 |
case GEOMETRIC_OPERATOR_CROSSES:
|
| 348 |
return "Crosses"; |
| 349 |
case GEOMETRIC_OPERATOR_INTERSECT:
|
| 350 |
return "Intersect"; |
| 351 |
case GEOMETRIC_OPERATOR_CONTAINS:
|
| 352 |
return "Contains"; |
| 353 |
case GEOMETRIC_OPERATOR_DWITHIN:
|
| 354 |
return "Dwithin"; |
| 355 |
case GEOMETRIC_OPERATOR_BEYOND:
|
| 356 |
return "Beyond"; |
| 357 |
case GEOMETRIC_OPERATOR_BBOX:
|
| 358 |
return "BBOX"; |
| 359 |
default:
|
| 360 |
return "Equals"; |
| 361 |
} |
| 362 |
|
| 363 |
} |
| 364 |
|
| 365 |
public String getSeparator(int separator) { |
| 366 |
return null; |
| 367 |
} |
| 368 |
|
| 369 |
|
| 370 |
} |