Examples of javax.imageio.metadata.IIOInvalidTreeException

javax.imageio.metadata.IIOInvalidTreeException
An IIOInvalidTreeException is thrown when an attempt by an IIOMetadata object to parse a tree of IIOMetadataNodes fails. The node that led to the parsing error may be stored. As with any parsing error, the actual error may occur at a different point that that where it is detected. The node returned by getOffendingNode should merely be considered as a clue to the actual nature of the problem. @see IIOMetadata#setFromTree @see IIOMetadata#mergeTree @see IIOMetadataNode

        Htable(Node node) throws IIOInvalidTreeException {
            if (node.getNodeName().equals("dhtable")) {
                NamedNodeMap attrs = node.getAttributes();
                int count = attrs.getLength();
                if (count != 2) {
                    throw new IIOInvalidTreeException
                        ("dhtable node must have 2 attributes", node);
                }
                tableClass = getAttributeValue(node, attrs, "class", 0, 1, true);
                tableID = getAttributeValue(node, attrs, "htableId", 0, 3, true);
                if (node instanceof IIOMetadataNode) {
                    IIOMetadataNode ourNode = (IIOMetadataNode) node;
                    JPEGHuffmanTable table =
                        (JPEGHuffmanTable) ourNode.getUserObject();
                    if (table == null) {
                        throw new IIOInvalidTreeException
                            ("dhtable node must have user object", node);
                    }
                    numCodes = table.getLengths();
                    values = table.getValues();
                } else {
                    throw new IIOInvalidTreeException
                        ("dhtable node must have user object", node);
                }
            } else {
                throw new IIOInvalidTreeException
                    ("Invalid node, expected dqtable", node);
            }


        }

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        approxLow = (value != -1) ? value : approxLow;


        // Now the children
        NodeList children = node.getChildNodes();
        if (children.getLength() != numComponents) {
            throw new IIOInvalidTreeException
                ("numScanComponents must match the number of children", node);
        }
        componentSpecs = new ScanComponentSpec[numComponents];
        for (int i = 0; i < numComponents; i++) {
            componentSpecs[i] = new ScanComponentSpec(children.item(i));

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        samplesPerLine = (value != -1) ? value : samplesPerLine;
        int numComponents = getAttributeValue(node, attrs, "numFrameComponents",
                                              1, 4, false);
        NodeList children = node.getChildNodes();
        if (children.getLength() != numComponents) {
            throw new IIOInvalidTreeException
                ("numFrameComponents must match number of children", node);
        }
        componentSpecs = new ComponentSpec [numComponents];
        for (int i = 0; i < numComponents; i++) {
            componentSpecs[i] = new ComponentSpec(children.item(i));

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            String comment =
                node.getAttributes().getNamedItem("comment").getNodeValue();
            if (comment != null) {
                data = comment.getBytes(); // Default encoding
            } else {
                throw new IIOInvalidTreeException("Empty comment node!", node);
            }
        }
    }

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        if (node instanceof IIOMetadataNode) {
            IIOMetadataNode iioNode = (IIOMetadataNode) node;
            try {
                data = (byte []) iioNode.getUserObject();
            } catch (Exception e) {
                IIOInvalidTreeException newGuy =
                    new IIOInvalidTreeException
                    ("Can't get User Object", node);
                newGuy.initCause(e);
                throw newGuy;
            }
        } else {
            throw new IIOInvalidTreeException
                ("Node must have User Object", node);
        }
    }

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        }
        String valueString = attrs.getNamedItem(name).getNodeValue();
        int value = -1;
        if (valueString == null) {
            if (required) {
                throw new IIOInvalidTreeException
                    (name + " attribute not found", node);
            }
        } else {
              value = Integer.parseInt(valueString);
              if ((value < min) || (value > max)) {
                  throw new IIOInvalidTreeException
                      (name + " attribute out of range", node);
              }
        }
        return value;
    }

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    DQTMarkerSegment(Node node) throws IIOInvalidTreeException {
        super(JPEG.DQT);
        NodeList children = node.getChildNodes();
        int size = children.getLength();
        if ((size < 1) || (size > 4)) {
            throw new IIOInvalidTreeException("Invalid DQT node", node);
        }
        for (int i = 0; i < size; i++) {
            tables.add(new Qtable(children.item(i)));
        }
    }

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            throw  new IllegalArgumentException("Unsupported format name: "
                                                + formatName);
        }
        if (!isConsistent()) {
            markerSequence = copy;
            throw new IIOInvalidTreeException
                ("Merged tree is invalid; original restored", root);
        }
    }

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    private void mergeNativeTree(Node root) throws IIOInvalidTreeException {
        String name = root.getNodeName();
        if (name != ((isStream) ? JPEG.nativeStreamMetadataFormatName
                                : JPEG.nativeImageMetadataFormatName)) {
            throw new IIOInvalidTreeException("Invalid root node name: " + name,
                                              root);
        }
        if (root.getChildNodes().getLength() != 2) { // JPEGvariety and markerSequence
            throw new IIOInvalidTreeException(
                "JPEGvariety and markerSequence nodes must be present", root);
        }
        mergeJFIFsubtree(root.getFirstChild());
        mergeSequenceSubtree(root.getLastChild());
    }

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            } else if (name.equals("sof")) {
                mergeSOFNode(node);
            } else if (name.equals("sos")) {
                mergeSOSNode(node);
            } else {
                throw new IIOInvalidTreeException("Invalid node: " + name, node);
            }
        }
    }

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