diff options
Diffstat (limited to 'petascope/src/petascope/wcps/server/core/CoverageExpr.java')
| -rw-r--r-- | petascope/src/petascope/wcps/server/core/CoverageExpr.java | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/petascope/src/petascope/wcps/server/core/CoverageExpr.java b/petascope/src/petascope/wcps/server/core/CoverageExpr.java new file mode 100644 index 0000000..d9d9c70 --- /dev/null +++ b/petascope/src/petascope/wcps/server/core/CoverageExpr.java @@ -0,0 +1,179 @@ + /*
+ * This file is part of PetaScope.
+ *
+ * PetaScope is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * PetaScope is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with PetaScope. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * For more information please see <http://www.PetaScope.org>
+ * or contact Peter Baumann via <baumann@rasdaman.com>.
+ *
+ * Copyright 2009 Jacobs University Bremen, Peter Baumann.
+ */
+package petascope.wcps.server.core;
+
+import petascope.wcps.server.exceptions.InvalidCrsException;
+import petascope.wcps.server.exceptions.WCPSException;
+import org.w3c.dom.*;
+
+import java.util.Iterator;
+
+public class CoverageExpr implements IRasNode, ICoverageInfo {
+
+ private IRasNode child;
+ private String childInfo;
+ private CoverageInfo info;
+ private boolean scalarExpr = false;
+// private String var;
+ private boolean simpleCoverage; // True is the coverage is just a string
+
+ public CoverageExpr(Node node, XmlQuery xq) throws WCPSException, InvalidCrsException {
+ while ((node != null) && node.getNodeName().equals("#text")) {
+ node = node.getNextSibling();
+ }
+
+ if (node == null) {
+ throw new WCPSException("CoverageExprType parsing error!");
+ }
+
+ String nodeName = node.getNodeName();
+
+ simpleCoverage = false;
+ System.err.println("CoverageExprType: node " + nodeName);
+
+ if (nodeName.equals("coverage")) {
+ simpleCoverage = true;
+ childInfo = node.getFirstChild().getNodeValue();
+
+ if (!xq.isIteratorDefined(childInfo)) {
+ throw new WCPSException("Iterator " + childInfo + " not defined!");
+ }
+
+ Iterator<String> coverages = xq.getCoverages(childInfo);
+
+ info = new CoverageInfo(xq.getMetadataSource().read(coverages.next()));
+
+ while (coverages.hasNext()) { // Check if all the coverages are compatible
+ CoverageInfo tmp = new CoverageInfo(
+ xq.getMetadataSource().read(
+ coverages.next()));
+
+ if (!tmp.isCompatible(info)) {
+ throw new WCPSException(
+ "Incompatible coverages within the same iterator");
+ }
+ }
+
+ System.err.println("Found simple coverage definition: " + childInfo + ", "
+ + info.toString());
+ } else if (nodeName.equals("crsTransform")) {
+ // TODO: implement CrsTransform class
+ child = new CrsTransformCoverageExpr(node, xq);
+ } else if (nodeName.equals("scale")) {
+ // TODO: implement class ScaleCoverageExprType
+ child = new ScaleCoverageExpr(node, xq);
+ } else if (nodeName.equals("construct")) {
+ child = new ConstructCoverageExpr(node.getFirstChild(), xq);
+ } else if (nodeName.equals("const")) {
+ child = new ConstantCoverageExpr(node.getFirstChild(), xq);
+ } // else if (nodeName.equals("variableRef"))
+ // {
+ // child = new VariableReference(node, xq);
+ // }
+ else { // Try one of the groups
+ child = null;
+
+ if (child == null) {
+ try {
+ child = new SetMetadataCoverageExpr(node, xq);
+ System.err.println("Matched set metadata operation.");
+ } catch (WCPSException e) {
+ System.err.println("Failed to match set metadata operation: "
+ + e.toString() + "\nRetrying");
+ child = null;
+ }
+ }
+
+ if (child == null) {
+ try {
+ child = new InducedOperationCoverageExpr(node, xq);
+ System.err.println("Matched induced coverage expression operation.");
+ } catch (WCPSException e) {
+ System.err.println("Failed to match induced coverage expression operation: "
+ + e.toString() + "\nRetrying");
+ child = null;
+ if (e.getMessage().equals("Method not implemented")) {
+ throw e;
+ }
+ }
+ }
+
+ if (child == null) {
+ try {
+ child = new SubsetOperationCoverageExpr(node, xq);
+ System.err.println("Matched subset operation.");
+ } catch (WCPSException e) {
+ System.err.println("Failed to match subset operation: "
+ + "\nRetrying");
+ child = null;
+ }
+ }
+
+ if (child == null) {
+ try {
+ child = new ScalarExpr(node, xq);
+ this.scalarExpr = true;
+ System.err.println("Matched scalar expression.");
+ } catch (WCPSException e) {
+ System.err.println("Failed to match scalar expression: "
+ + "\nRetrying");
+ child = null;
+ }
+ }
+ }
+
+ if (!simpleCoverage && (child == null)) {
+ throw new WCPSException("Invalid coverage Expression, next node: "
+ + node.getNodeName());
+ }
+
+ if (info == null) {
+ System.err.println(node.getNodeName());
+ info = new CoverageInfo(((ICoverageInfo) child).getCoverageInfo());
+ }
+ }
+
+ public CoverageInfo getCoverageInfo() {
+ return info;
+ }
+
+ public boolean isScalarExpr()
+ {
+ return scalarExpr;
+ }
+
+ public ScalarExpr getScalarExpr()
+ {
+ ScalarExpr r = null;
+ if (scalarExpr)
+ r = (ScalarExpr) child;
+ return r;
+ }
+
+ public String toRasQL() {
+ if (simpleCoverage) {
+ return childInfo;
+ } else {
+ return child.toRasQL();
+ }
+ }
+};
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