*/
package org.opendaylight.yangtools.yang.data.codec.gson;
-import com.google.common.base.CharMatcher;
-import com.google.common.base.Preconditions;
-import com.google.common.base.Strings;
+import static com.google.common.base.Preconditions.checkState;
+import static java.util.Objects.requireNonNull;
+import static org.w3c.dom.Node.ELEMENT_NODE;
+import static org.w3c.dom.Node.TEXT_NODE;
+
+import com.google.common.collect.ClassToInstanceMap;
+import com.google.common.collect.ImmutableClassToInstanceMap;
import com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.net.URI;
+import java.util.regex.Pattern;
+import javax.xml.transform.dom.DOMSource;
+import org.checkerframework.checker.regex.qual.Regex;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.AugmentationIdentifier;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeWithValue;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.AnydataExtension;
import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriterExtension;
import org.opendaylight.yangtools.yang.data.impl.codec.SchemaTracker;
+import org.opendaylight.yangtools.yang.data.util.NormalizedAnydata;
+import org.opendaylight.yangtools.yang.data.util.SingleChildDataNodeContainer;
+import org.opendaylight.yangtools.yang.model.api.AnyDataSchemaNode;
import org.opendaylight.yangtools.yang.model.api.AnyXmlSchemaNode;
import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
-import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
-import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
-import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
+import org.opendaylight.yangtools.yang.model.api.SchemaNode;
import org.opendaylight.yangtools.yang.model.api.SchemaPath;
-
-import java.io.IOException;
-import java.io.Writer;
-import java.net.URI;
+import org.opendaylight.yangtools.yang.model.api.TypedDataSchemaNode;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.w3c.dom.Text;
/**
* This implementation will create JSON output as output stream.
*
+ * <p>
* Values of leaf and leaf-list are NOT translated according to codecs.
- *
- * FIXME: rewrite this in terms of {@link JsonWriter}.
*/
-public class JSONNormalizedNodeStreamWriter implements NormalizedNodeStreamWriter {
+public abstract class JSONNormalizedNodeStreamWriter implements NormalizedNodeStreamWriter, AnydataExtension {
+ private static final class Exclusive extends JSONNormalizedNodeStreamWriter {
+ Exclusive(final JSONCodecFactory codecFactory, final SchemaTracker tracker, final JsonWriter writer,
+ final JSONStreamWriterRootContext rootContext) {
+ super(codecFactory, tracker, writer, rootContext);
+ }
+
+ @Override
+ public void close() throws IOException {
+ flush();
+ closeWriter();
+ }
+ }
+
+ private static final class Nested extends JSONNormalizedNodeStreamWriter {
+ Nested(final JSONCodecFactory codecFactory, final SchemaTracker tracker, final JsonWriter writer,
+ final JSONStreamWriterRootContext rootContext) {
+ super(codecFactory, tracker, writer, rootContext);
+ }
+
+ @Override
+ public void close() throws IOException {
+ flush();
+ // The caller "owns" the writer, let them close it
+ }
+ }
+
/**
* RFC6020 deviation: we are not required to emit empty containers unless they
* are marked as 'presence'.
*/
private static final boolean DEFAULT_EMIT_EMPTY_CONTAINERS = true;
- /**
- * Matcher used to check if a string needs to be escaped.
- */
- private static final CharMatcher JSON_ILLEGAL_STRING_CHARACTERS = CharMatcher.anyOf("\\\"\n\r");
+ @Regex
+ private static final String NUMBER_STRING = "-?\\d+(\\.\\d+)?";
+ private static final Pattern NUMBER_PATTERN = Pattern.compile(NUMBER_STRING);
+
+ @Regex
+ private static final String NOT_DECIMAL_NUMBER_STRING = "-?\\d+";
+ private static final Pattern NOT_DECIMAL_NUMBER_PATTERN = Pattern.compile(NOT_DECIMAL_NUMBER_STRING);
private final SchemaTracker tracker;
private final JSONCodecFactory codecs;
- private final Writer writer;
- private final String indent;
+ private final JsonWriter writer;
private JSONStreamWriterContext context;
- private JSONNormalizedNodeStreamWriter(final JSONCodecFactory codecFactory, final SchemaPath path,
- final Writer writer, final URI initialNs, final int indentSize) {
- this.writer = Preconditions.checkNotNull(writer);
-
- Preconditions.checkArgument(indentSize >= 0, "Indent size must be non-negative");
- if (indentSize != 0) {
- indent = Strings.repeat(" ", indentSize);
- } else {
- indent = null;
- }
- this.codecs = Preconditions.checkNotNull(codecFactory);
- this.tracker = SchemaTracker.create(codecFactory.getSchemaContext(), path);
- this.context = new JSONStreamWriterRootContext(initialNs);
+ JSONNormalizedNodeStreamWriter(final JSONCodecFactory codecFactory, final SchemaTracker tracker,
+ final JsonWriter writer, final JSONStreamWriterRootContext rootContext) {
+ this.writer = requireNonNull(writer);
+ this.codecs = requireNonNull(codecFactory);
+ this.tracker = requireNonNull(tracker);
+ this.context = requireNonNull(rootContext);
}
/**
- * Create a new stream writer, which writes to the specified {@link Writer}.
+ * Create a new stream writer, which writes to the specified output stream.
*
- * @param schemaContext Schema context
- * @param writer Output writer
- * @return A stream writer instance
- */
- public static NormalizedNodeStreamWriter create(final SchemaContext schemaContext, final Writer writer) {
- return new JSONNormalizedNodeStreamWriter(JSONCodecFactory.create(schemaContext), SchemaPath.ROOT, writer, null, 0);
- }
-
- /**
- * Create a new stream writer, which writes to the specified {@link Writer}.
+ * <p>
+ * The codec factory can be reused between multiple writers.
+ *
+ * <p>
+ * Returned writer is exclusive user of JsonWriter, which means it will start
+ * top-level JSON element and ends it.
*
- * @param schemaContext Schema context
- * @param path Root schemapath
- * @param writer Output writer
+ * <p>
+ * This instance of writer can be used only to emit one top level element,
+ * otherwise it will produce incorrect JSON. Closing this instance will close
+ * the writer too.
+ *
+ * @param codecFactory JSON codec factory
+ * @param path Schema Path
+ * @param initialNs Initial namespace
+ * @param jsonWriter JsonWriter
* @return A stream writer instance
*/
- public static NormalizedNodeStreamWriter create(final SchemaContext schemaContext, final SchemaPath path, final Writer writer) {
- return new JSONNormalizedNodeStreamWriter(JSONCodecFactory.create(schemaContext), path, writer, null, 0);
+ public static NormalizedNodeStreamWriter createExclusiveWriter(final JSONCodecFactory codecFactory,
+ final SchemaPath path, final URI initialNs, final JsonWriter jsonWriter) {
+ return new Exclusive(codecFactory, SchemaTracker.create(codecFactory.getSchemaContext(), path), jsonWriter,
+ new JSONStreamWriterExclusiveRootContext(initialNs));
}
/**
- * Create a new stream writer, which writes to the specified {@link Writer}.
+ * Create a new stream writer, which writes to the specified output stream.
+ *
+ * <p>
+ * The codec factory can be reused between multiple writers.
*
- * @param schemaContext Schema context
- * @param path Root schemapath
- * @param writer Output writer
+ * <p>
+ * Returned writer is exclusive user of JsonWriter, which means it will start
+ * top-level JSON element and ends it.
+ *
+ * <p>
+ * This instance of writer can be used only to emit one top level element,
+ * otherwise it will produce incorrect JSON. Closing this instance will close
+ * the writer too.
+ *
+ * @param codecFactory JSON codec factory
+ * @param rootNode Root node
* @param initialNs Initial namespace
+ * @param jsonWriter JsonWriter
* @return A stream writer instance
*/
- public static NormalizedNodeStreamWriter create(final SchemaContext schemaContext, final SchemaPath path,
- final URI initialNs, final Writer writer) {
- return new JSONNormalizedNodeStreamWriter(JSONCodecFactory.create(schemaContext), path, writer, initialNs, 0);
+ public static NormalizedNodeStreamWriter createExclusiveWriter(final JSONCodecFactory codecFactory,
+ final DataNodeContainer rootNode, final URI initialNs, final JsonWriter jsonWriter) {
+ return new Exclusive(codecFactory, SchemaTracker.create(rootNode), jsonWriter,
+ new JSONStreamWriterExclusiveRootContext(initialNs));
}
/**
* Create a new stream writer, which writes to the specified output stream.
*
- * @param schemaContext Schema context
- * @param writer Output writer
- * @param indentSize indentation size
+ * <p>
+ * The codec factory can be reused between multiple writers.
+ *
+ * <p>
+ * Returned writer can be used emit multiple top level element,
+ * but does not start / close parent JSON object, which must be done
+ * by user providing {@code jsonWriter} instance in order for
+ * JSON to be valid. Closing this instance <strong>will not</strong>
+ * close the wrapped writer; the caller must take care of that.
+ *
+ * @param codecFactory JSON codec factory
+ * @param path Schema Path
+ * @param initialNs Initial namespace
+ * @param jsonWriter JsonWriter
* @return A stream writer instance
*/
- public static NormalizedNodeStreamWriter create(final SchemaContext schemaContext, final Writer writer, final int indentSize) {
- return new JSONNormalizedNodeStreamWriter(JSONCodecFactory.create(schemaContext), SchemaPath.ROOT, writer, null, indentSize);
+ public static NormalizedNodeStreamWriter createNestedWriter(final JSONCodecFactory codecFactory,
+ final SchemaPath path, final URI initialNs, final JsonWriter jsonWriter) {
+ return new Nested(codecFactory, SchemaTracker.create(codecFactory.getSchemaContext(), path), jsonWriter,
+ new JSONStreamWriterSharedRootContext(initialNs));
}
/**
- * Create a new stream writer, which writes to the specified output stream. The codec factory
- * can be reused between multiple writers.
+ * Create a new stream writer, which writes to the specified output stream.
+ *
+ * <p>
+ * The codec factory can be reused between multiple writers.
+ *
+ * <p>
+ * Returned writer can be used emit multiple top level element,
+ * but does not start / close parent JSON object, which must be done
+ * by user providing {@code jsonWriter} instance in order for
+ * JSON to be valid. Closing this instance <strong>will not</strong>
+ * close the wrapped writer; the caller must take care of that.
*
- * @param codecFactor JSON codec factory
- * @param writer Output writer
- * @param indentSize indentation size
+ * @param codecFactory JSON codec factory
+ * @param rootNode Root node
+ * @param initialNs Initial namespace
+ * @param jsonWriter JsonWriter
* @return A stream writer instance
*/
- public static NormalizedNodeStreamWriter create(final JSONCodecFactory codecFactory, final Writer writer, final int indentSize) {
- return new JSONNormalizedNodeStreamWriter(codecFactory, SchemaPath.ROOT, writer, null, indentSize);
+ public static NormalizedNodeStreamWriter createNestedWriter(final JSONCodecFactory codecFactory,
+ final DataNodeContainer rootNode, final URI initialNs, final JsonWriter jsonWriter) {
+ return new Nested(codecFactory, SchemaTracker.create(rootNode), jsonWriter,
+ new JSONStreamWriterSharedRootContext(initialNs));
}
@Override
- public void leafNode(final NodeIdentifier name, final Object value) throws IOException {
- final LeafSchemaNode schema = tracker.leafNode(name);
- final JSONCodec<Object> codec = codecs.codecFor(schema.getType());
+ public ClassToInstanceMap<NormalizedNodeStreamWriterExtension> getExtensions() {
+ return ImmutableClassToInstanceMap.of(AnydataExtension.class, this);
+ }
- context.emittingChild(codecs.getSchemaContext(), writer, indent);
+ @Override
+ public void startLeafNode(final NodeIdentifier name) throws IOException {
+ tracker.startLeafNode(name);
+ context.emittingChild(codecs.getSchemaContext(), writer);
context.writeChildJsonIdentifier(codecs.getSchemaContext(), writer, name.getNodeType());
- writeValue(codec.serialize(value), codec.needQuotes());
}
@Override
- public void startLeafSet(final NodeIdentifier name, final int childSizeHint) throws IOException {
+ public final void startLeafSet(final NodeIdentifier name, final int childSizeHint) throws IOException {
tracker.startLeafSet(name);
context = new JSONStreamWriterListContext(context, name);
}
@Override
- public void leafSetEntryNode(final Object value) throws IOException {
- final LeafListSchemaNode schema = tracker.leafSetEntryNode();
- final JSONCodec<Object> codec = codecs.codecFor(schema.getType());
+ public void startLeafSetEntryNode(final NodeWithValue<?> name) throws IOException {
+ tracker.startLeafSetEntryNode(name);
+ context.emittingChild(codecs.getSchemaContext(), writer);
+ }
- context.emittingChild(codecs.getSchemaContext(), writer, indent);
- writeValue(codec.serialize(value), codec.needQuotes());
+ @Override
+ public final void startOrderedLeafSet(final NodeIdentifier name, final int childSizeHint) throws IOException {
+ tracker.startLeafSet(name);
+ context = new JSONStreamWriterListContext(context, name);
}
/*
* Warning suppressed due to static final constant which triggers a warning
* for the call to schema.isPresenceContainer().
*/
- @SuppressWarnings("unused")
@Override
- public void startContainerNode(final NodeIdentifier name, final int childSizeHint) throws IOException {
- final ContainerSchemaNode schema = tracker.startContainerNode(name);
- context = new JSONStreamWriterNamedObjectContext(context, name, DEFAULT_EMIT_EMPTY_CONTAINERS || schema.isPresenceContainer());
+ public final void startContainerNode(final NodeIdentifier name, final int childSizeHint) throws IOException {
+ final SchemaNode schema = tracker.startContainerNode(name);
+ final boolean isPresence = schema instanceof ContainerSchemaNode
+ ? ((ContainerSchemaNode) schema).isPresenceContainer() : DEFAULT_EMIT_EMPTY_CONTAINERS;
+ context = new JSONStreamWriterNamedObjectContext(context, name, isPresence);
}
@Override
- public void startUnkeyedList(final NodeIdentifier name, final int childSizeHint) throws IOException {
+ public final void startUnkeyedList(final NodeIdentifier name, final int childSizeHint) throws IOException {
tracker.startList(name);
context = new JSONStreamWriterListContext(context, name);
}
@Override
- public void startUnkeyedListItem(final NodeIdentifier name, final int childSizeHint) throws IOException {
+ public final void startUnkeyedListItem(final NodeIdentifier name, final int childSizeHint) throws IOException {
tracker.startListItem(name);
context = new JSONStreamWriterObjectContext(context, name, DEFAULT_EMIT_EMPTY_CONTAINERS);
}
@Override
- public void startMapNode(final NodeIdentifier name, final int childSizeHint) throws IOException {
+ public final void startMapNode(final NodeIdentifier name, final int childSizeHint) throws IOException {
tracker.startList(name);
context = new JSONStreamWriterListContext(context, name);
}
@Override
- public void startMapEntryNode(final NodeIdentifierWithPredicates identifier, final int childSizeHint)
+ public final void startMapEntryNode(final NodeIdentifierWithPredicates identifier, final int childSizeHint)
throws IOException {
tracker.startListItem(identifier);
context = new JSONStreamWriterObjectContext(context, identifier, DEFAULT_EMIT_EMPTY_CONTAINERS);
}
@Override
- public void startOrderedMapNode(final NodeIdentifier name, final int childSizeHint) throws IOException {
+ public final void startOrderedMapNode(final NodeIdentifier name, final int childSizeHint) throws IOException {
tracker.startList(name);
context = new JSONStreamWriterListContext(context, name);
}
@Override
- public void startChoiceNode(final NodeIdentifier name, final int childSizeHint) {
+ public final void startChoiceNode(final NodeIdentifier name, final int childSizeHint) {
tracker.startChoiceNode(name);
context = new JSONStreamWriterInvisibleContext(context);
}
@Override
- public void startAugmentationNode(final AugmentationIdentifier identifier) {
+ public final void startAugmentationNode(final AugmentationIdentifier identifier) {
tracker.startAugmentationNode(identifier);
context = new JSONStreamWriterInvisibleContext(context);
}
@Override
- public void anyxmlNode(final NodeIdentifier name, final Object value) throws IOException {
- @SuppressWarnings("unused")
- final AnyXmlSchemaNode schema = tracker.anyxmlNode(name);
- // FIXME: should have a codec based on this :)
+ public boolean startAnydataNode(final NodeIdentifier name, final Class<?> objectModel) throws IOException {
+ if (NormalizedAnydata.class.isAssignableFrom(objectModel)) {
+ tracker.startAnydataNode(name);
+ context.emittingChild(codecs.getSchemaContext(), writer);
+ context.writeChildJsonIdentifier(codecs.getSchemaContext(), writer, name.getNodeType());
+ return true;
+ }
+
+ return false;
+ }
- context.emittingChild(codecs.getSchemaContext(), writer, indent);
+ @Override
+ public final void startAnyxmlNode(final NodeIdentifier name) throws IOException {
+ tracker.startAnyxmlNode(name);
+ context.emittingChild(codecs.getSchemaContext(), writer);
context.writeChildJsonIdentifier(codecs.getSchemaContext(), writer, name.getNodeType());
- writeValue(String.valueOf(value), true);
}
@Override
- public void endNode() throws IOException {
+ public final void startYangModeledAnyXmlNode(final NodeIdentifier name, final int childSizeHint)
+ throws IOException {
+ tracker.startYangModeledAnyXmlNode(name);
+ context = new JSONStreamWriterNamedObjectContext(context, name, true);
+ }
+
+ @Override
+ public final void endNode() throws IOException {
tracker.endNode();
- context = context.endNode(codecs.getSchemaContext(), writer, indent);
+ context = context.endNode(codecs.getSchemaContext(), writer);
+
+ if (context instanceof JSONStreamWriterRootContext) {
+ context.emitEnd(writer);
+ }
}
- private void writeValue(final String str, final boolean needQuotes) throws IOException {
- if (needQuotes) {
- writer.append('"');
+ @Override
+ public final void flush() throws IOException {
+ writer.flush();
+ }
+
+ final void closeWriter() throws IOException {
+ writer.close();
+ }
+
+ @Override
+ public void scalarValue(final Object value) throws IOException {
+ final Object current = tracker.getParent();
+ if (current instanceof TypedDataSchemaNode) {
+ writeValue(value, codecs.codecFor((TypedDataSchemaNode) current));
+ } else if (current instanceof AnyDataSchemaNode) {
+ writeAnydataValue(value);
+ } else {
+ throw new IllegalStateException(String.format("Cannot emit scalar %s for %s", value, current));
+ }
+ }
+
+ @Override
+ public void domSourceValue(final DOMSource value) throws IOException {
+ final Object current = tracker.getParent();
+ checkState(current instanceof AnyXmlSchemaNode, "Cannot emit DOMSource %s for %s", value, current);
+ // FIXME: should have a codec based on this :)
+ writeAnyXmlValue(value);
+ }
+
+ @SuppressWarnings("unchecked")
+ private void writeValue(final Object value, final JSONCodec<?> codec) throws IOException {
+ ((JSONCodec<Object>) codec).writeValue(writer, value);
+ }
+
+ private void writeAnydataValue(final Object value) throws IOException {
+ if (value instanceof NormalizedAnydata) {
+ writeNormalizedAnydata((NormalizedAnydata) value);
+ } else {
+ throw new IllegalStateException("Unexpected anydata value " + value);
+ }
+ }
+
+ private void writeNormalizedAnydata(final NormalizedAnydata anydata) throws IOException {
+ anydata.writeTo(JSONNormalizedNodeStreamWriter.createNestedWriter(codecs.rebaseTo(anydata.getSchemaContext()),
+ new SingleChildDataNodeContainer(anydata.getContextNode()), context.getNamespace(), writer));
+ }
+
+ private void writeAnyXmlValue(final DOMSource anyXmlValue) throws IOException {
+ writeXmlNode(anyXmlValue.getNode());
+ }
+
+ private void writeXmlNode(final Node node) throws IOException {
+ if (isArrayElement(node)) {
+ writeArrayContent(node);
+ return;
+ }
+ final Element firstChildElement = getFirstChildElement(node);
+ if (firstChildElement == null) {
+ writeXmlValue(node);
+ } else {
+ writeObjectContent(firstChildElement);
+ }
+ }
- final int needEscape = JSON_ILLEGAL_STRING_CHARACTERS.countIn(str);
- if (needEscape != 0) {
- final char[] escaped = new char[str.length() + needEscape];
- int offset = 0;
+ private void writeArrayContent(final Node node) throws IOException {
+ writer.beginArray();
+ handleArray(node);
+ writer.endArray();
+ }
+
+ private void writeObjectContent(final Element firstChildElement) throws IOException {
+ writer.beginObject();
+ writeObject(firstChildElement);
+ writer.endObject();
+ }
- for (int i = 0; i < str.length(); i++) {
- final char c = str.charAt(i);
- if (JSON_ILLEGAL_STRING_CHARACTERS.matches(c)) {
- escaped[offset++] = '\\';
- }
- escaped[offset++] = c;
+ private static boolean isArrayElement(final Node node) {
+ if (ELEMENT_NODE == node.getNodeType()) {
+ final String nodeName = node.getNodeName();
+ for (Node nextNode = node.getNextSibling(); nextNode != null; nextNode = nextNode.getNextSibling()) {
+ if (ELEMENT_NODE == nextNode.getNodeType() && nodeName.equals(nextNode.getNodeName())) {
+ return true;
}
- writer.write(escaped);
- } else {
- writer.append(str);
}
+ }
+ return false;
+ }
- writer.append('"');
- } else {
- writer.append(str);
+ private void handleArray(final Node node) throws IOException {
+ final Element parentNode = (Element)node.getParentNode();
+ final NodeList elementsList = parentNode.getElementsByTagName(node.getNodeName());
+ for (int i = 0, length = elementsList.getLength(); i < length; i++) {
+ final Node arrayElement = elementsList.item(i);
+ final Element parent = (Element)arrayElement.getParentNode();
+ if (parentNode.isSameNode(parent)) {
+ final Element firstChildElement = getFirstChildElement(arrayElement);
+ if (firstChildElement != null) {
+ writeObjectContent(firstChildElement);
+ } else {
+ // It may be scalar
+ writeXmlValue(arrayElement);
+ }
+ }
}
}
- @Override
- public void flush() throws IOException {
- writer.flush();
+ private void writeObject(Node node) throws IOException {
+ String previousNodeName = "";
+ while (node != null) {
+ if (ELEMENT_NODE == node.getNodeType()) {
+ if (!node.getNodeName().equals(previousNodeName)) {
+ previousNodeName = node.getNodeName();
+ writer.name(node.getNodeName());
+ writeXmlNode(node);
+ }
+ }
+ node = node.getNextSibling();
+ }
}
- @Override
- public void close() throws IOException {
- writer.flush();
- writer.close();
+ private void writeXmlValue(final Node node) throws IOException {
+ Text firstChild = getFirstChildText(node);
+ String childNodeText = firstChild != null ? firstChild.getWholeText() : "";
+ childNodeText = childNodeText != null ? childNodeText.trim() : "";
+
+ if (NUMBER_PATTERN.matcher(childNodeText).matches()) {
+ writer.value(parseNumber(childNodeText));
+ return;
+ }
+ switch (childNodeText) {
+ case "null":
+ writer.nullValue();
+ break;
+ case "false":
+ writer.value(false);
+ break;
+ case "true":
+ writer.value(true);
+ break;
+ default:
+ writer.value(childNodeText);
+ }
+ }
+
+ private static Element getFirstChildElement(final Node node) {
+ final NodeList children = node.getChildNodes();
+ for (int i = 0, length = children.getLength(); i < length; i++) {
+ final Node childNode = children.item(i);
+ if (ELEMENT_NODE == childNode.getNodeType()) {
+ return (Element) childNode;
+ }
+ }
+ return null;
}
+ private static Text getFirstChildText(final Node node) {
+ final NodeList children = node.getChildNodes();
+ for (int i = 0, length = children.getLength(); i < length; i++) {
+ final Node childNode = children.item(i);
+ if (TEXT_NODE == childNode.getNodeType()) {
+ return (Text) childNode;
+ }
+ }
+ return null;
+ }
+
+ // json numbers are 64 bit wide floating point numbers - in java terms it is either long or double
+ private static Number parseNumber(final String numberText) {
+ if (NOT_DECIMAL_NUMBER_PATTERN.matcher(numberText).matches()) {
+ return Long.valueOf(numberText);
+ }
+
+ return Double.valueOf(numberText);
+ }
}
Code Review / yangtools.git / blobdiff