1 files changed, 131 insertions, 0 deletions
diff --git a/petascope/src/petascope/wcps/server/core/SliceCoverageExpr.java b/petascope/src/petascope/wcps/server/core/SliceCoverageExpr.java
new file mode 100644
index 0000000..6eeca36
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+++ b/petascope/src/petascope/wcps/server/core/SliceCoverageExpr.java
@@ -0,0 +1,131 @@
+/*
+ * 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 java.math.BigInteger;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import org.w3c.dom.Node;
+
+public class SliceCoverageExpr implements IRasNode, ICoverageInfo {
+
+    private List<DimensionPointElement> axisList;
+    private CoverageExpr coverageExprType;
+    private CoverageInfo coverageInfo = null;
+    private String[] dim;
+    private DimensionPointElement elem;
+    private int dims;
+
+    public SliceCoverageExpr(Node node, XmlQuery xq) throws WCPSException, InvalidCrsException {
+        Node child = node.getFirstChild();
+        String nodeName;
+
+        axisList = new ArrayList<DimensionPointElement>();
+
+        while (child != null) {
+            nodeName = child.getNodeName();
+
+            if (nodeName.equals("#text")) {
+                child = child.getNextSibling();
+                continue;
+            }
+
+            try {
+                System.err.println("Trying out an CoverageExprType group...");
+                coverageExprType = new CoverageExpr(child, xq);
+                coverageInfo = coverageExprType.getCoverageInfo();
+                child = child.getNextSibling();
+                continue;
+            } catch (WCPSException e) {
+                System.err.println("This was no CoverageExprType: " + nodeName);
+            }
+
+            try {
+                // Start a new axis and save it
+                elem = new DimensionPointElement(child, xq);
+                axisList.add(elem);
+                child = elem.getNextNode();
+                continue;
+            } catch (WCPSException e) {
+                System.err.println("This was no Dimension Point ELement: " + child.getNodeName());
+            }
+
+            // else unknown element
+            throw new WCPSException("Unknown node for TrimCoverage expression:" + child.getNodeName());
+        }
+
+        dims = coverageInfo.getNumDimensions();
+        dim = new String[dims];
+
+        for (int j = 0; j < dims; ++j) {
+            dim[j] = "*:*";
+        }
+
+        Iterator<DimensionPointElement> i = axisList.iterator();
+        DimensionPointElement axis;
+        int axisId;
+        int slicingPosInt;
+        String slicingPosStr;
+
+        while (i.hasNext()) {
+            axis = i.next();
+            /* TODO: BUG: This searches the axis types list using name, not type */
+            axisId = coverageInfo.getDomainIndexByName(axis.getAxisName());
+            slicingPosStr = axis.getSlicingPosition();
+            dim[axisId] = slicingPosStr;
+            // Slicing position can be a constant number or a variable reference
+            try {
+                slicingPosInt = Integer.parseInt(slicingPosStr);
+            } catch (NumberFormatException e) {
+                slicingPosInt = 1;
+            }
+            coverageInfo.setCellDimension(
+                    axisId,
+                    new CellDomainElement(
+                    BigInteger.valueOf(slicingPosInt), BigInteger.valueOf(slicingPosInt)));
+
+        }
+
+    }
+
+    public CoverageInfo getCoverageInfo() {
+        return coverageInfo;
+    }
+
+    public String toRasQL() {
+        String result = "(" + coverageExprType.toRasQL() + ") [";
+
+        for (int j = 0; j < dims; ++j) {
+            if (j > 0) {
+                result += ",";
+            }
+
+            result += dim[j];
+        }
+
+        result += "]";
+        return result;
+    }
+}