SQLData SOAP Server v3.0
Simple Object Access Protocol (SOAP) is a XML based protocol for
exchanging information over the Internet. It is a powerful tool for building web
services and performing distributed computations.
SQLData SOAP server is a bottom-up implementation of SOAP 1.1 standard.
Written in C++ with efficiency and reliability in mind, it is a high performance
and low footprint SOAP service with build-in HTTP/HTTPS supports. The server
comes with a flexible Web Service Definition
Language (WSDL) parser, a powerful SOAP Actor, a dynamic SOAP client, and a
smart XML Cache Manager. It is one of the best SOAP implementations in the
industry.
With the SOAP server, building web services becomes a simple task of creating
COM objects and generating WSDL files. When a SOAP request is received,
the server validates the message, parses the WSDL file, constructs input
parameters and invokes the specified SOAP method. The results are then converted
to a SOAP response message to the remote caller.
One of the key features of SQLData SOAP server is that it can act as a SOAP
client or intermediary. Services requested may end up being processed by another SOAP service
provider. The routing process is totally transparent to callers.
Key Features
- Comprehensive SOAP 1.1 implementation: The server supports many features
defined in the SOAP 1.1 specification. It allows not only accessing object
methods, but also invoking routines written in other programming languages
such as C, Java, VBScript, etc.
- WSDL Enabled: The server has a fully implemented WSDL parser. It also
works well with out WSDL file.
- Non-SOAP services Access: The server is capable of programming non-SOAP
services such as HTTP services and SMTP services, and turning them
into SOAP services.
- Service Request Language (SRL): The XML based language provides
interfaces not only to web services, but also to local services such as
directory services or database services. It is an ideal tool for integrating
web services with legacy systems and DBMS systems.
- Database Enabled: The server turns database services into SOAP services
instantly with no programming required. SOAP client can issue SQL commands
against ODBC data sources after installation.
- Complete Data Type Support: The server can handle virtually any data
types, simple or complex, in SOAP request messages.
- Array Data Type: Single dimensional array is supported.
- Id/href Handling: The server automatically de-references href in both SOAP
messages and WSDL files.
- RPC and Document Handling: The server is capable of processing both RPC
style messages (section 5, 7 encoding) and document style (literal) messages.
- SOAP Header Support: The server handles header and multiple headers within
a single requests. Headers are dispatched to registered handlers and the
final results are merged with the response message.
- High Compatibility: Our SOAP client and server are known to be compatible
with many other SOAP servers and clients. We are one of the earliest
participants in all rounds of SOAP interop
tests with excellent results. Our generic
client is used by thousands of users every day to access web
services.
- Multi-language Support: Web service component can be written in C/C++,
COM, JavaScript, VBScript and other active scripting languages.
- Multipart/form-data MIME encoding: SOAP attachment capability is provided.
- Direct Internet Message Encapsulation (DIME): SOAP attachments encoded as
DIME are decoded automatically.
- Support WS-Routing (SOAP Routing) protocol. It can be used either as a
SOAP intermediary or a final destination. We have a live service available
at http://soapclient.com/SoapRouter.html.
- High Data Integrity with XML Signature: The server can sign SOAP messages using digital certificates
and encrypts the signature using receiver's public key. This makes SOAP
messages tamper-proof (see demo).
- Data Security: The server supports XML-Encryption, it can encrypt SOAP
messages in whole or in parts using public key cryptography (see example).
- Authentication: The server provides basic, digest and token-based
authentications methods with SSL. Customized authentication schemes are also
supported.
- WSDL Caching: Remote WSDL files are automatically cached locally with
configurable expiration time.
Major Components
SQLData SOAP server has the following key components:
- SOAP/HTTP client: The client is compatible with
almost all well-known SOAP implementations. It also provides direct access to
other web services using web browser.
- XML Schema Parser: A very powerful schema parser
supports complex data constructs, simple and derived data types, array
definitions, namespace handling and lookups, and schema imports/includes.
- WSDL Parser: The component parses and
validates service description files of different kinds. It uses SAX 2.0 XML
parser as basis.
- SOAP Transport: The component provides extensible
wiring methods for SOAP messages. Currently supported transports include
HTTP, HTTPS, SMTP, and MSMQ.
- SRL Processor: This is the Service Request Language
processor, which is the key part of SQLData Integration Server. SRL is a
much higher protocol than SOAP. It allows direct access to all HTTP services
(SOAP or non-SOAP) using regular programming language such as C/C++.
- SOAP Actor: This component fulfills SOAP requests. It
is responsible for activating/creating objects, converting data, invoking
methods, and packaging results.
- SOAP Serializer/De-serializer: It packs/unpacks SOAP
messages and constructs SOAP parameters for method invocation.
- UDDI Interface: Based on SRL and our SOAP client
library, the interface allows direct access to UDDI
registries.
- SOAP Security: The component provides XML signature
and encryption services.
Limitations:
- Works only on Windows platforms.
- Doesn't handle sparse array and multi-dimensional array.
Download File:
You can download a trial version by filing a simple
request
form.
Sample Applications:
Generic
SOAP Client: This is our SOAP client in action. It can dynamically
access any available web services given a WSDL file. It is a very useful
tool for testing web services without writing a SOAP client. SOAP
Web Search: This is a SOAP interface to major search engines. It
is the first such SOAP services on the web that allows access to non-SOAP
services from SOAP applications. SOAP
Data Service: The applications shows how conventional database
services can be turned into SOAP services. This is an important step toward
widely distributed database systems because it makes SQL programming
possible over the Internet. UDDI
Browser: This is yet another SOAP client application. Universal
Description, Discovery, and Integration (UDDI) Service is a SOAP service
operated by Microsoft, IBM and others. SQLData SOAP server acts as a client
to the public available registry.
Related Information
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