Web Services Essentials

Scalar Types

For scalar types, SOAP adopts all the built-in simple types specified by the XML Schema specification. This includes strings, floats, doubles, and integers. Table 3-3 lists the main simple types, excerpted from the XML Schema Part 0: Primer (http://www.w3.org/TR/2000/WD-xmlschema-0-20000407/ ).

Table 3-3. A list of the main XML Schema built-in simple types

Simple type	Example(s)
string	Web services
Boolean	true, false, 1, 0
float	-INF, -1E4, -0, 0, 12.78E-2, 12, INF, NaN
double	-INF, -1E4, -0, 0, 12.78E-2, 12, INF, NaN
decimal	-1.23, 0, 123.4, 1000.00
binary	100010
integer	-126789, -1, 0, 1, 126789
nonPositiveInteger	-126789, -1, 0
negativeInteger	-126789, -1
long	-1, 12678967543233
int	-1, 126789675
short	-1, 12678
byte	-1, 126
nonNegativeInteger	0, 1, 126789
unsignedLong	0, 12678967543233
unsignedInt	0, 1267896754
unsignedShort	0, 12678
unsignedByte	0, 126
positiveInteger	1, 126789
date	1999-05-31
time	13:20:00.000, 13:20:00.000-05:00

For example, here is a SOAP response with a double data type:

<?xml version='1.0' encoding='UTF-8'?>
<SOAP-ENV:Envelope
   xmlns:SOAP-ENV="http://www.w3.org/2001/09/soap-envelope"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <SOAP-ENV:Body>
      <ns1:getPriceResponse
         xmlns:ns1="urn:examples:priceservice"
         SOAP-ENV:encodingStyle="http://www.w3.org/2001/09/soap-encoding">
         <return xsi:type="xsd:double">54.99</return> </ns1:getPriceResponse> ...