protected internal void SetQuery(Policy policy, Statement statement, bool write)
{
byte[] functionArgBuffer = null;
int fieldCount = 0;
int filterSize = 0;
int binNameSize = 0;
Begin();
if (statement.ns != null)
{
dataOffset += ByteUtil.EstimateSizeUtf8(statement.ns) + FIELD_HEADER_SIZE;
fieldCount++;
}
if (statement.indexName != null)
{
dataOffset += ByteUtil.EstimateSizeUtf8(statement.indexName) + FIELD_HEADER_SIZE;
fieldCount++;
}
if (statement.setName != null)
{
dataOffset += ByteUtil.EstimateSizeUtf8(statement.setName) + FIELD_HEADER_SIZE;
fieldCount++;
}
// Allocate space for TaskId field.
dataOffset += 8 + FIELD_HEADER_SIZE;
fieldCount++;
if (statement.filter != null)
{
IndexCollectionType type = statement.filter.CollectionType;
if (type != IndexCollectionType.DEFAULT)
{
dataOffset += FIELD_HEADER_SIZE + 1;
fieldCount++;
}
dataOffset += FIELD_HEADER_SIZE;
filterSize++; // num filters
filterSize += statement.filter.EstimateSize();
dataOffset += filterSize;
fieldCount++;
// Query bin names are specified as a field (Scan bin names are specified later as operations)
if (statement.binNames != null)
{
dataOffset += FIELD_HEADER_SIZE;
binNameSize++; // num bin names
foreach (string binName in statement.binNames)
{
binNameSize += ByteUtil.EstimateSizeUtf8(binName) + 1;
}
dataOffset += binNameSize;
fieldCount++;
}
}
else
{
// Calling query with no filters is more efficiently handled by a primary index scan.
// Estimate scan options size.
dataOffset += 2 + FIELD_HEADER_SIZE;
fieldCount++;
// Estimate scan timeout size.
dataOffset += 4 + FIELD_HEADER_SIZE;
fieldCount++;
}
PredExp[] predExp = statement.PredExp;
int predSize = 0;
if (predExp != null)
{
dataOffset += FIELD_HEADER_SIZE;
predSize = PredExp.EstimateSize(predExp);
dataOffset += predSize;
fieldCount++;
}
if (statement.functionName != null)
{
dataOffset += FIELD_HEADER_SIZE + 1; // udf type
dataOffset += ByteUtil.EstimateSizeUtf8(statement.packageName) + FIELD_HEADER_SIZE;
dataOffset += ByteUtil.EstimateSizeUtf8(statement.functionName) + FIELD_HEADER_SIZE;
if (statement.functionArgs.Length > 0)
{
functionArgBuffer = Packer.Pack(statement.functionArgs);
}
else
{
functionArgBuffer = new byte[0];
}
dataOffset += FIELD_HEADER_SIZE + functionArgBuffer.Length;
fieldCount += 4;
}
if (statement.filter == null)
{
if (statement.binNames != null)
{
foreach (string binName in statement.binNames)
{
EstimateOperationSize(binName);
}
}
}
SizeBuffer();
int operationCount = (statement.filter == null && statement.binNames != null) ? statement.binNames.Length : 0;
if (write)
{
WriteHeader((WritePolicy)policy, Command.INFO1_READ, Command.INFO2_WRITE, fieldCount, operationCount);
}
else
{
QueryPolicy qp = (QueryPolicy)policy;
int readAttr = qp.includeBinData ? Command.INFO1_READ : Command.INFO1_READ | Command.INFO1_NOBINDATA;
WriteHeader(policy, readAttr, 0, fieldCount, operationCount);
}
if (statement.ns != null)
{
WriteField(statement.ns, FieldType.NAMESPACE);
}
if (statement.indexName != null)
{
WriteField(statement.indexName, FieldType.INDEX_NAME);
}
if (statement.setName != null)
{
WriteField(statement.setName, FieldType.TABLE);
}
// Write taskId field
WriteFieldHeader(8, FieldType.TRAN_ID);
ByteUtil.LongToBytes(statement.taskId, dataBuffer, dataOffset);
dataOffset += 8;
if (statement.filter != null)
{
IndexCollectionType type = statement.filter.CollectionType;
if (type != IndexCollectionType.DEFAULT)
{
WriteFieldHeader(1, FieldType.INDEX_TYPE);
dataBuffer[dataOffset++] = (byte)type;
}
WriteFieldHeader(filterSize, FieldType.INDEX_RANGE);
dataBuffer[dataOffset++] = (byte)1;
dataOffset = statement.filter.Write(dataBuffer, dataOffset);
// Query bin names are specified as a field (Scan bin names are specified later as operations)
if (statement.binNames != null)
{
WriteFieldHeader(binNameSize, FieldType.QUERY_BINLIST);
dataBuffer[dataOffset++] = (byte)statement.binNames.Length;
foreach (string binName in statement.binNames)
{
int len = ByteUtil.StringToUtf8(binName, dataBuffer, dataOffset + 1);
dataBuffer[dataOffset] = (byte)len;
dataOffset += len + 1;
}
}
}
else
{
// Calling query with no filters is more efficiently handled by a primary index scan.
WriteFieldHeader(2, FieldType.SCAN_OPTIONS);
byte priority = (byte)policy.priority;
priority <<= 4;
dataBuffer[dataOffset++] = priority;
dataBuffer[dataOffset++] = (byte)100;
// Write scan timeout
WriteFieldHeader(4, FieldType.SCAN_TIMEOUT);
dataOffset += ByteUtil.IntToBytes((uint)policy.socketTimeout, dataBuffer, dataOffset);
}
if (predExp != null)
{
WriteFieldHeader(predSize, FieldType.PREDEXP);
dataOffset = PredExp.Write(predExp, dataBuffer, dataOffset);
}
if (statement.functionName != null)
{
WriteFieldHeader(1, FieldType.UDF_OP);
dataBuffer[dataOffset++] = (statement.returnData) ? (byte)1 : (byte)2;
WriteField(statement.packageName, FieldType.UDF_PACKAGE_NAME);
WriteField(statement.functionName, FieldType.UDF_FUNCTION);
WriteField(functionArgBuffer, FieldType.UDF_ARGLIST);
}
// Scan bin names are specified after all fields.
if (statement.filter == null)
{
if (statement.binNames != null)
{
foreach (string binName in statement.binNames)
{
WriteOperation(binName, Operation.Type.READ);
}
}
}
End();
}
private void WritePredExp(PredExp[] predExp, int predSize)
{
WriteFieldHeader(predSize, FieldType.PREDEXP);
dataOffset = PredExp.Write(predExp, dataBuffer, dataOffset);
}
