private void writeInt32(
int readInt32, final MapOrListWriterImpl writer, String fieldName, boolean isList) {
final IntHolder ih = new IntHolder();
ih.value = readInt32;
if (isList == false) {
writer.integer(fieldName).write(ih);
} else {
writer.list.integer().write(ih);
}
}
private void writeInt64(
long readInt64, final MapOrListWriterImpl writer, String fieldName, boolean isList) {
final BigIntHolder bh = new BigIntHolder();
bh.value = readInt64;
if (isList == false) {
writer.bigInt(fieldName).write(bh);
} else {
writer.list.bigInt().write(bh);
}
}
private void writeBoolean(
boolean readBoolean, final MapOrListWriterImpl writer, String fieldName, boolean isList) {
final BitHolder bit = new BitHolder();
bit.value = readBoolean ? 1 : 0;
if (isList == false) {
writer.bit(fieldName).write(bit);
} else {
writer.list.bit().write(bit);
}
}
private void writeDouble(
double readDouble, final MapOrListWriterImpl writer, String fieldName, boolean isList) {
final Float8Holder f8h = new Float8Holder();
f8h.value = readDouble;
if (isList == false) {
writer.float8(fieldName).write(f8h);
} else {
writer.list.float8().write(f8h);
}
}
private void writeBinary(
final MapOrListWriterImpl writer,
String fieldName,
boolean isList,
final VarBinaryHolder vb,
final byte[] bytes) {
ensure(bytes.length);
workBuf.setBytes(0, bytes);
vb.buffer = workBuf;
vb.start = 0;
vb.end = bytes.length;
if (isList == false) {
writer.binary(fieldName).write(vb);
} else {
writer.list.varBinary().write(vb);
}
}
private void writeString(
String readString, final MapOrListWriterImpl writer, String fieldName, boolean isList) {
int length;
byte[] strBytes;
try {
strBytes = readString.getBytes("UTF-8");
} catch (UnsupportedEncodingException e) {
throw new DrillRuntimeException("Unable to read string value for field: " + fieldName, e);
}
length = strBytes.length;
ensure(length);
workBuf.setBytes(0, strBytes);
final VarCharHolder vh = new VarCharHolder();
vh.buffer = workBuf;
vh.start = 0;
vh.end = length;
if (isList == false) {
writer.varChar(fieldName).write(vh);
} else {
writer.list.varChar().write(vh);
}
}
private void writeToListOrMap(
BsonReader reader, final MapOrListWriterImpl writer, boolean isList, String fieldName) {
writer.start();
// If isList is true, then filedName can be null as it is not required while
// writing
while (reader.readBsonType() != BsonType.END_OF_DOCUMENT) {
if (!isList) {
fieldName = reader.readName();
}
BsonType currentBsonType = reader.getCurrentBsonType();
switch (currentBsonType) {
case INT32:
int readInt32 = reader.readInt32();
if (readNumbersAsDouble) {
writeDouble(readInt32, writer, fieldName, isList);
} else {
writeInt32(readInt32, writer, fieldName, isList);
}
atLeastOneWrite = true;
break;
case INT64:
long readInt64 = reader.readInt64();
if (readNumbersAsDouble) {
writeDouble(readInt64, writer, fieldName, isList);
} else {
writeInt64(readInt64, writer, fieldName, isList);
}
atLeastOneWrite = true;
break;
case ARRAY:
reader.readStartArray();
writeToListOrMap(reader, (MapOrListWriterImpl) writer.list(fieldName), true, fieldName);
atLeastOneWrite = true;
break;
case BINARY:
// handle types
writeBinary(reader, writer, fieldName, isList);
atLeastOneWrite = true;
break;
case BOOLEAN:
boolean readBoolean = reader.readBoolean();
writeBoolean(readBoolean, writer, fieldName, isList);
atLeastOneWrite = true;
break;
case DATE_TIME:
long readDateTime = reader.readDateTime();
writeDateTime(readDateTime, writer, fieldName, isList);
atLeastOneWrite = true;
break;
case DOCUMENT:
reader.readStartDocument();
// To handle nested Documents.
MapOrListWriterImpl _writer = writer;
if (!isList) {
_writer = (MapOrListWriterImpl) writer.map(fieldName);
} else {
_writer = (MapOrListWriterImpl) writer.listoftmap(fieldName);
}
writeToListOrMap(reader, _writer, false, fieldName);
atLeastOneWrite = true;
break;
case DOUBLE:
double readDouble = reader.readDouble();
writeDouble(readDouble, writer, fieldName, isList);
atLeastOneWrite = true;
break;
case JAVASCRIPT:
final String readJavaScript = reader.readJavaScript();
writeString(readJavaScript, writer, fieldName, isList);
atLeastOneWrite = true;
break;
case JAVASCRIPT_WITH_SCOPE:
final String readJavaScriptWithScopeString = reader.readJavaScriptWithScope();
writeString(readJavaScriptWithScopeString, writer, fieldName, isList);
atLeastOneWrite = true;
break;
case NULL:
// just read and ignore.
reader.readNull();
break;
case OBJECT_ID:
writeObjectId(reader, writer, fieldName, isList);
atLeastOneWrite = true;
break;
case STRING:
final String readString = reader.readString();
writeString(readString, writer, fieldName, isList);
atLeastOneWrite = true;
break;
case SYMBOL:
final String readSymbol = reader.readSymbol();
writeString(readSymbol, writer, fieldName, isList);
atLeastOneWrite = true;
break;
case TIMESTAMP:
int time = reader.readTimestamp().getTime();
writeTimeStamp(time, writer, fieldName, isList);
atLeastOneWrite = true;
break;
default:
// Didn't handled REGULAR_EXPRESSION and DB_POINTER types
throw new DrillRuntimeException("UnSupported Bson type: " + currentBsonType);
}
}
if (!isList) {
reader.readEndDocument();
} else {
reader.readEndArray();
}
}
