i have 3 files xml:
instance s1 sailors (s1.xml):
<xml> <data> <sid>22</sid> <sname>dustin</sname> <rating>7</rating> <age>45</age> </data> <data> <sid>31</sid> <sname>lubber</sname> <rating>8</rating> <age>55</age> </data> <data> <sid>58</sid> <sname>rusty</sname> <rating>10</rating> <age>35</age> </data> </xml> instance s2 sailors (s2.xml):
<xml> <data> <sid>28</sid> <sname>yuppy</sname> <rating>9</rating> <age>35</age> </data> <data> <sid>31</sid> <sname>lubber</sname> <rating>8</rating> <age>55</age> </data> <data> <sid>44</sid> <sname>gruppy</sname> <rating>5</rating> <age>35</age> </data> <data> <sid>58</sid> <sname>rusty</sname> <rating>10</rating> <age>35</age> </data> </xml> instance r1 reserves (r1.xml):
<xml> <data> <sid>22</sid> <bid>101</bid> <day>10/10/96</day> </data> <data> <sid>58</sid> <bid>103</bid> <day>11/12/96</day> </data> </xml> im trying use operator algebra xml file : union (∪), intersection (∩), set-difference (-), , cross-product (×)
im trying search s1 ∪ s2, s1 ∩s2, s1-s2, s1 x r1
for example im trying make new document consisting of s1 ∪ s2 :
<xml> <data> <sid>22</sid> <sname>dustin</sname> <rating>7</rating> <age>45</age> </data> <data> <sid>31</sid> <sname>lubber</sname> <rating>8</rating> <age>55</age> </data> <data> <sid>58</sid> <sname>rusty</sname> <rating>10</rating> <age>35</age> </data> <data> <sid>28</sid> <sname>yuppy</sname> <rating>9</rating> <age>35</age> </data> <data> <sid>44</sid> <sname>gruppy</sname> <rating>5</rating> <age>35</age> </data> </xml> anyone can me please ?? i'm trying using xslt..
thanks..
best regards,
rijal
there example functions perform these operations (using xslt 2.0 or xquery 1.0) in w3c functions , operators specification at
http://www.w3.org/tr/xpath-functions/#union-intersect-except-on-values
for example set difference coded in xquery as:
declare function eg:value-except ( $arg1 xs:anyatomictype*, $arg2 xs:anyatomictype*) xs:anyatomictype* { fn:distinct-values($arg1[not(.=$arg2)]) } 
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