public CoverageExpr(Node node, XmlQuery xq) throws WCPSException, SecoreException { while ((node != null) && node.getNodeName().equals("#" + WcpsConstants.MSG_TEXT)) { node = node.getNextSibling(); } if (node == null) { throw new WCPSException("CoverageExprType parsing error."); } String nodeName = node.getNodeName(); log.trace(nodeName); simpleCoverage = false; if (nodeName.equals(WcpsConstants.MSG_COVERAGE)) { simpleCoverage = true; childInfo = node.getFirstChild().getNodeValue(); if (!xq.isIteratorDefined(childInfo)) { throw new WCPSException(WcpsConstants.MSG_ITERATOR + " " + childInfo + " not defined"); } Iterator<String> coverages = xq.getCoverages(childInfo); try { 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."); } } } catch (Exception ex) { throw new WCPSException(ex.getMessage(), ex); } log.trace("Found simple coverage definition: " + childInfo + ", " + info.toString()); } else if (nodeName.equals(WcpsConstants.MSG_CRS_TRANSFORM)) { // TODO: implement CrsTransform class child = new CrsTransformCoverageExpr(node, xq); } else if (nodeName.equals(WcpsConstants.MSG_SCALE)) { child = new ScaleCoverageExpr(node, xq); } else if (nodeName.equals(WcpsConstants.MSG_CONSTRUCT)) { child = new ConstructCoverageExpr(node.getFirstChild(), xq); } else if (nodeName.equals(WcpsConstants.MSG_CONST)) { child = new ConstantCoverageExpr(node.getFirstChild(), xq); } else if (nodeName.equals(WcpsConstants.MSG_SWITCH)) { child = new SwitchExpr(node, xq); } // else if (nodeName.equals("variableRef")) // { // child = new VariableReference(node, xq); // } else { // Try one of the groups child = null; String firstMessage = ""; Node childNode = node; while ((childNode != null) && childNode.getNodeName().equals("#" + WcpsConstants.MSG_TEXT)) { childNode = childNode.getNextSibling(); } String n = childNode.getNodeName(); // TODO: not implemented // if (child == null) { // try { // child = new SetMetadataCoverageExpr(node, xq); // log.trace(" " + WcpsConstants.MSG_MATCHED_SET_METADATA); // } catch (WCPSException e) { // child = null; // exMessage = e.getMessage(); // firstMessage = exMessage; // } // } if (child == null) { if (n.equals(WcpsConstants.MSG_RANGE_CONSTRUCTOR) || UnaryOperationCoverageExpr.NODE_NAMES.contains(n) || BinaryOperationCoverageExpr.NODE_NAMES.contains(nodeName)) { try { child = new InducedOperationCoverageExpr(node, xq); log.trace("Matched induced coverage expression operation."); } catch (WCPSException e) { child = null; if (e.getMessage().equals("Method not implemented")) { throw e; } } } } if (child == null) { if (SubsetOperationCoverageExpr.NODE_NAMES.contains(n)) { try { child = new SubsetOperationCoverageExpr(node, xq); log.trace("Matched subset operation."); } catch (WCPSException e) { if (e.getExceptionCode().equals(ExceptionCode.MissingCRS) || e.getExceptionCode().equals(ExceptionCode.InvalidSubsetting)) { throw (e); } child = null; exMessage = exMessage.equals(firstMessage) ? e.getMessage() : exMessage; } } } if (child == null) { try { child = new ScalarExpr(node, xq); this.scalarExpr = true; log.trace("Matched scalar expression."); } catch (WCPSException e) { child = null; exMessage = exMessage.equals(firstMessage) ? e.getMessage() : exMessage; } } } if (!simpleCoverage && (child == null)) { throw new WCPSException( "Invalid coverage Expression, next node: " + node.getNodeName() + " - " + exMessage); } if (info == null) { info = new CoverageInfo(((ICoverageInfo) child).getCoverageInfo()); } if (!(child == null)) { // Keep child for XML tree crawling super.children.add(child); } // Fetch slices, so that we know which axes should be discarded from the computation slices = MiscUtil.childrenOfType(this, SliceCoverageExpr.class); }