*/
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 com.google.gson.stream.JsonWriter;
+import java.io.IOException;
+import java.net.URI;
+import org.opendaylight.yangtools.yang.common.QName;
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.schema.stream.NormalizedNodeStreamWriter;
import org.opendaylight.yangtools.yang.data.impl.codec.SchemaTracker;
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.SchemaNode;
import org.opendaylight.yangtools.yang.model.api.SchemaPath;
-import java.io.IOException;
-import java.io.Writer;
-import java.net.URI;
-
/**
* This implementation will create JSON output as output stream.
*
* 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 final class JSONNormalizedNodeStreamWriter implements NormalizedNodeStreamWriter {
/**
* 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");
-
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;
- }
+ private JSONNormalizedNodeStreamWriter(final JSONCodecFactory codecFactory, final SchemaPath path, final JsonWriter JsonWriter, final JSONStreamWriterRootContext rootContext) {
+ this.writer = Preconditions.checkNotNull(JsonWriter);
this.codecs = Preconditions.checkNotNull(codecFactory);
this.tracker = SchemaTracker.create(codecFactory.getSchemaContext(), path);
- this.context = new JSONStreamWriterRootContext(initialNs);
+ this.context = Preconditions.checkNotNull(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}.
+ * The codec factory can be reused between multiple writers.
*
- * @param schemaContext Schema context
- * @param path Root schemapath
- * @param writer Output writer
- * @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);
- }
-
- /**
- * Create a new stream writer, which writes to the specified {@link Writer}.
+ * 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
+ * This instance of writer can be used only to emit one top level element,
+ * otherwise it will produce incorrect JSON.
+ *
+ * @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 URI initialNs, final Writer writer) {
- return new JSONNormalizedNodeStreamWriter(JSONCodecFactory.create(schemaContext), path, writer, initialNs, 0);
+ public static NormalizedNodeStreamWriter createExclusiveWriter(final JSONCodecFactory codecFactory, final SchemaPath path, final URI initialNs, final JsonWriter jsonWriter) {
+ return new JSONNormalizedNodeStreamWriter(codecFactory, path, 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
- * @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);
- }
-
- /**
- * Create a new stream writer, which writes to the specified output stream. The codec factory
- * can be reused between multiple writers.
+ * The codec factory can be reused between multiple writers.
*
- * @param codecFactor JSON codec factory
- * @param writer Output writer
- * @param indentSize indentation size
+ * 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.
+ *
+ * @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 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 SchemaPath path, final URI initialNs, final JsonWriter jsonWriter) {
+ return new JSONNormalizedNodeStreamWriter(codecFactory, path, 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());
-
- context.emittingChild(codecs.getSchemaContext(), writer, indent);
+ final JSONCodec<Object> codec = codecs.codecFor(schema);
+ context.emittingChild(codecs.getSchemaContext(), writer);
context.writeChildJsonIdentifier(codecs.getSchemaContext(), writer, name.getNodeType());
- writeValue(codec.serialize(value), codec.needQuotes());
+ writeValue(value, codec);
}
@Override
}
@Override
- public void leafSetEntryNode(final Object value) throws IOException {
+ public void leafSetEntryNode(final QName name, final Object value) throws IOException {
final LeafListSchemaNode schema = tracker.leafSetEntryNode();
- final JSONCodec<Object> codec = codecs.codecFor(schema.getType());
+ final JSONCodec<Object> codec = codecs.codecFor(schema);
+ context.emittingChild(codecs.getSchemaContext(), writer);
+ writeValue(value, codec);
+ }
- context.emittingChild(codecs.getSchemaContext(), writer, indent);
- writeValue(codec.serialize(value), codec.needQuotes());
+ @Override
+ public void startOrderedLeafSet(final NodeIdentifier name, final int childSizeHint) throws IOException {
+ tracker.startLeafSet(name);
+ context = new JSONStreamWriterListContext(context, name);
}
/*
@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());
+ final SchemaNode schema = tracker.startContainerNode(name);
+
+ // FIXME this code ignores presence for containers
+ // but datastore does as well and it needs be fixed first (2399)
+ context = new JSONStreamWriterNamedObjectContext(context, name, DEFAULT_EMIT_EMPTY_CONTAINERS);
}
@Override
final AnyXmlSchemaNode schema = tracker.anyxmlNode(name);
// FIXME: should have a codec based on this :)
- context.emittingChild(codecs.getSchemaContext(), writer, indent);
+ context.emittingChild(codecs.getSchemaContext(), writer);
context.writeChildJsonIdentifier(codecs.getSchemaContext(), writer, name.getNodeType());
- writeValue(String.valueOf(value), true);
+ // FIXME this kind of serialization is incorrect since the value for AnyXml is now a DOMSource
+ writer.value(String.valueOf(value));
}
@Override
- public void endNode() throws IOException {
- tracker.endNode();
- context = context.endNode(codecs.getSchemaContext(), writer, indent);
+ public void startYangModeledAnyXmlNode(final NodeIdentifier name, final int childSizeHint) throws IOException {
+ tracker.startYangModeledAnyXmlNode(name);
+ context = new JSONStreamWriterNamedObjectContext(context, name, true);
}
- private void writeValue(final String str, final boolean needQuotes) throws IOException {
- if (needQuotes) {
- writer.append('"');
-
- final int needEscape = JSON_ILLEGAL_STRING_CHARACTERS.countIn(str);
- if (needEscape != 0) {
- final char[] escaped = new char[str.length() + needEscape];
- int offset = 0;
-
- 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;
- }
- writer.write(escaped);
- } else {
- writer.append(str);
- }
+ @Override
+ public void endNode() throws IOException {
+ tracker.endNode();
+ context = context.endNode(codecs.getSchemaContext(), writer);
- writer.append('"');
- } else {
- writer.append(str);
+ if(context instanceof JSONStreamWriterRootContext) {
+ context.emitEnd(writer);
}
}
+ private void writeValue(final Object value, final JSONCodec<Object> codec)
+ throws IOException {
+ codec.serializeToWriter(writer,value);
+ }
+
@Override
public void flush() throws IOException {
writer.flush();
@Override
public void close() throws IOException {
- writer.flush();
+ flush();
writer.close();
}
-
}
Code Review / yangtools.git / blobdiff