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

        }
        if (node.hasChildNodes()) {
            NodeList children = node.getChildNodes();
            int count = children.getLength();
            if (count > 2) {
                throw new IIOInvalidTreeException
                    ("app0JFIF node cannot have > 2 children", node);
            }
            for (int i = 0; i < count; i++) {
                Node child = children.item(i);
                String name = child.getNodeName();
                if (name.equals("JFXX")) {
                    if ((!extSegments.isEmpty()) && fromScratch) {
                        throw new IIOInvalidTreeException
                            ("app0JFIF node cannot have > 1 JFXX node", node);
                    }
                    NodeList exts = child.getChildNodes();
                    int extCount = exts.getLength();
                    for (int j = 0; j < extCount; j++) {
                        Node ext = exts.item(j);
                        extSegments.add(new JFIFExtensionMarkerSegment(ext));
                    }
                }
                if (name.equals("app2ICC")) {
                    if ((iccSegment != null) && fromScratch) {
                        throw new IIOInvalidTreeException
                            ("> 1 ICC APP2 Marker Segment not supported", node);
                    }
                    iccSegment = new ICCMarkerSegment(child);
                }
            }

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                                         "extensionCode", 
                                         THUMB_JPEG, 
                                         THUMB_RGB, 
                                         false);
                if (code == THUMB_UNASSIGNED) {
                throw new IIOInvalidTreeException
                    ("invalid extensionCode attribute value", node);
                }
            } else {
                code = THUMB_UNASSIGNED;
            }
            // Now the child
            if (node.getChildNodes().getLength() != 1) {
                throw new IIOInvalidTreeException
                    ("app0JFXX node must have exactly 1 child", node);
            }
            Node child = node.getFirstChild();
            String name = child.getNodeName();
            if (name.equals("JFIFthumbJPEG")) {
                if (code == THUMB_UNASSIGNED) {
                    code = THUMB_JPEG;
                }
                thumb = new JFIFThumbJPEG(child);
            } else if (name.equals("JFIFthumbPalette")) {
                if (code == THUMB_UNASSIGNED) {
                    code = THUMB_PALETTE;
                }
                thumb = new JFIFThumbPalette(child);
            } else if (name.equals("JFIFthumbRGB")) {
                if (code == THUMB_UNASSIGNED) {
                    code = THUMB_RGB;
                }
                thumb = new JFIFThumbRGB(child);
            } else {
                throw new IIOInvalidTreeException
                    ("unrecognized app0JFXX child node", node);
            }
        }

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            thumbHeight = 0;
            this.name = name;
            NamedNodeMap attrs = node.getAttributes();
            int count = attrs.getLength();
            if (count > 2) {
                throw new IIOInvalidTreeException
                    (name +" node cannot have > 2 attributes", node);
            }
            if (count != 0) {
                int value = getAttributeValue(node, attrs, "thumbWidth", 
                                              0, 255, false);

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            buffer.bufPtr = 0;
        }


        JFIFThumbJPEG(Node node) throws IIOInvalidTreeException {
            if (node.getChildNodes().getLength() > 1) {
                throw new IIOInvalidTreeException
                    ("JFIFThumbJPEG node must have 0 or 1 child", node);
            }
            Node child = node.getFirstChild();
            if (child != null) {
                String name = child.getNodeName();
                if (!name.equals("markerSequence")) {
                    throw new IIOInvalidTreeException
                        ("JFIFThumbJPEG child must be a markerSequence node", 
                         node);
                }
                thumbMetadata = new JPEGMetadata(false, true);
                thumbMetadata.setFromMarkerSequenceNode(child);

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

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

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    }


    // Shorthand for throwing an IIOInvalidTreeException
    private void fatal(Node node, String reason)
        throws IIOInvalidTreeException {
        throw new IIOInvalidTreeException(reason, node);
    }

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