public void testEmptyArrayWrite() throws Exception {
StringWriter sw = new StringWriter();
JsonGenerator gen = new JsonFactory().createGenerator(sw);
JsonStreamContext ctxt = gen.getOutputContext();
assertTrue(ctxt.inRoot());
assertFalse(ctxt.inArray());
assertFalse(ctxt.inObject());
assertEquals(0, ctxt.getEntryCount());
assertEquals(0, ctxt.getCurrentIndex());
gen.writeStartArray();
ctxt = gen.getOutputContext();
assertFalse(ctxt.inRoot());
assertTrue(ctxt.inArray());
assertFalse(ctxt.inObject());
assertEquals(0, ctxt.getEntryCount());
assertEquals(0, ctxt.getCurrentIndex());
gen.writeEndArray();
ctxt = gen.getOutputContext();
assertTrue("Should be in root, was " + ctxt.getTypeDesc(), ctxt.inRoot());
assertFalse(ctxt.inArray());
assertFalse(ctxt.inObject());
assertEquals(1, ctxt.getEntryCount());
// Index won't yet move
assertEquals(0, ctxt.getCurrentIndex());
gen.close();
String docStr = sw.toString();
JsonParser jp = createParserUsingReader(docStr);
assertEquals(JsonToken.START_ARRAY, jp.nextToken());
assertEquals(JsonToken.END_ARRAY, jp.nextToken());
jp.close();
// Ok, then array with nested empty array
sw = new StringWriter();
gen = new JsonFactory().createGenerator(sw);
gen.writeStartArray();
gen.writeStartArray();
gen.writeEndArray();
gen.writeEndArray();
gen.close();
docStr = sw.toString();
jp = createParserUsingReader(docStr);
assertEquals(JsonToken.START_ARRAY, jp.nextToken());
assertEquals(JsonToken.START_ARRAY, jp.nextToken());
assertEquals(JsonToken.END_ARRAY, jp.nextToken());
assertEquals(JsonToken.END_ARRAY, jp.nextToken());
assertEquals(null, jp.nextToken());
jp.close();
}
@Override
public void close() throws IOException {
super.close();
/* 05-Dec-2008, tatu: To add [JACKSON-27], need to close open
* scopes.
*/
// First: let's see that we still have buffers...
if (_outputBuffer != null && isEnabled(JsonGenerator.Feature.AUTO_CLOSE_JSON_CONTENT)) {
while (true) {
JsonStreamContext ctxt = getOutputContext();
if (ctxt.inArray()) {
writeEndArray();
} else if (ctxt.inObject()) {
writeEndObject();
} else {
break;
}
}
}
_flushBuffer();
/* 25-Nov-2008, tatus: As per [JACKSON-16] we are not to call close()
* on the underlying Reader, unless we "own" it, or auto-closing
* feature is enabled.
* One downside: when using UTF8Writer, underlying buffer(s)
* may not be properly recycled if we don't close the writer.
*/
if (_writer != null) {
if (_ioContext.isResourceManaged() || isEnabled(JsonGenerator.Feature.AUTO_CLOSE_TARGET)) {
_writer.close();
} else if (isEnabled(JsonGenerator.Feature.FLUSH_PASSED_TO_STREAM)) {
// If we can't close it, we should at least flush
_writer.flush();
}
}
// Internal buffer(s) generator has can now be released as well
_releaseBuffers();
}