public Common.Signature toProto() {
Common.Signature.Builder builder = Common.Signature.newBuilder();
if (null != sql) {
builder.setSql(sql);
}
if (null != cursorFactory) {
builder.setCursorFactory(cursorFactory.toProto());
}
if (null != columns) {
for (ColumnMetaData column : columns) {
builder.addColumns(column.toProto());
}
}
if (null != parameters) {
for (AvaticaParameter parameter : parameters) {
builder.addParameters(parameter.toProto());
}
}
return builder.build();
}
public static Signature fromProto(Common.Signature protoSignature) {
List<ColumnMetaData> metadata = new ArrayList<>(protoSignature.getColumnsCount());
for (Common.ColumnMetaData protoMetadata : protoSignature.getColumnsList()) {
metadata.add(ColumnMetaData.fromProto(protoMetadata));
}
List<AvaticaParameter> parameters = new ArrayList<>(protoSignature.getParametersCount());
for (Common.AvaticaParameter protoParam : protoSignature.getParametersList()) {
parameters.add(AvaticaParameter.fromProto(protoParam));
}
final Descriptor desc = protoSignature.getDescriptorForType();
String sql = null;
if (ProtobufService.hasField(protoSignature, desc, Common.Signature.SQL_FIELD_NUMBER)) {
sql = protoSignature.getSql();
}
CursorFactory cursorFactory = null;
if (ProtobufService.hasField(
protoSignature, desc, Common.Signature.CURSOR_FACTORY_FIELD_NUMBER)) {
cursorFactory = CursorFactory.fromProto(protoSignature.getCursorFactory());
}
return Signature.create(metadata, sql, parameters, cursorFactory);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((columns == null) ? 0 : columns.hashCode());
result = prime * result + ((cursorFactory == null) ? 0 : cursorFactory.hashCode());
result = prime * result + ((parameters == null) ? 0 : parameters.hashCode());
result = prime * result + ((sql == null) ? 0 : sql.hashCode());
return result;
}
@Override
public boolean equals(Object o) {
if (o == this) {
return true;
}
if (o instanceof Signature) {
Signature other = (Signature) o;
if (null == columns) {
if (null != other.columns) {
return false;
}
} else if (!columns.equals(other.columns)) {
return false;
}
if (null == cursorFactory) {
if (null != other.cursorFactory) {
return false;
}
} else if (!cursorFactory.equals(other.cursorFactory)) {
return false;
}
if (null == parameters) {
if (null != other.parameters) {
return false;
}
} else if (!parameters.equals(other.parameters)) {
return false;
}
if (null == sql) {
if (null != other.sql) {
return false;
}
} else if (!sql.equals(other.sql)) {
return false;
}
return true;
}
return false;
}
public static CursorFactory fromProto(Common.CursorFactory proto) {
// Reconstruct CursorFactory
Class<?> clz = null;
FieldDescriptor clzFieldDesc =
proto
.getDescriptorForType()
.findFieldByNumber(Common.CursorFactory.CLASS_NAME_FIELD_NUMBER);
if (proto.hasField(clzFieldDesc)) {
try {
clz = Class.forName(proto.getClassName());
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
return CursorFactory.create(
Style.fromProto(proto.getStyle()), clz, proto.getFieldNamesList());
}
