【Aras二次开发】查询和迭代查找item集

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Technique  
  }  y3 B! Q5 \  x! x5 d/ g: UThere is no difference in setting up a query for a single Item or for many.  Only the
criteria define the set size returned.  In this recipe you create an Item and populate
the query criteria, apply it, and iterating over the Items returned producing a HTML
<TABLE>  fragment.

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JavaScript  
% \( Y  H) u5 ~$ O5 tvar qryItem = this.newItem("Part","get");
2 X7 W1 R! X( K1 u  @  q8 TqryItem.setAttribute("select","item_number,description,cost");
& n- ^  J6 N$ I; j: {; HqryItem.setProperty("cost", "100", "gt");
var results = qryItem.apply();
. u  h7 J* q2 A; h9 s8 U3 A! gvar count = results.getItemCount();
var content = "<table>";
/ P% y$ }/ H8 p' Nfor (var i=0; i<count; ++i)
9 D. k$ N( P3 M. e3 B{
  var item = results.getItemByIndex(i);
  content += "" +
    "<tr>" +
      "<td>" + item.getProperty("item_number") + "</td>" +
) K5 i5 {* ~* u5 G7 [: h      "<td>" + item.getProperty("description") + "</td>" +
      "<td>" + item.getProperty("cost") + "</td>" +
    "</tr>";
# S/ W+ `8 j" l% \  D; n: W( y}
# y" H" Y5 M; L# }4 O. s8 xcontent += "</table>";
return content;

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Item qryItem = this.newItem("Part","get");
* N& h0 M: v# a7 u4 aqryItem.setAttribute("select","item_number,description,cost");
qryItem.setProperty("cost", "100", "gt");
( h3 U% w- ?4 ~4 H( h' mItem results = qryItem.apply();
! P: C9 _" b$ w( t7 s" b) n( r& Lint count = results.getItemCount();
% s  ?  k: H$ ?- m+ Wint i;
string content = "<table>";
for (i=0; i<count; ++i)
4 [* _8 X" H+ v& Q4 m! _{
  Item item = results.getItemByIndex(i);
  content += "" +
6 C/ O/ V9 |. m) A: ]8 X" h    "<tr>" +
      "<td>" + item.getProperty("item_number") + "</td>" +
0 S1 Q# O9 K  `( O/ q! k      "<td>" + item.getProperty("description") + "</td>" +
      "<td>" + item.getProperty("cost") + "</td>" +
& i8 x/ S/ r) }, r    "</tr>";
9 R( a6 b4 M6 k4 K1 |}
4 u: d: M+ i. Xcontent += "</table>";
" i3 t5 D" k1 u1 O4 [, w) ?Innovator innovator = this.newInnovator();
return innovator.newResult(content);
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. B. h( U0 h1 [# Y3 {  aVB.Net  
, m7 L% V! ]6 M) x4 \$ KDim qryItem As Item = Me.NewItem("Part","get")
2 _7 g) F) P0 x+ |& `- tqryItem.SetAttribute("select","item_number,description,cost")
: |5 t' c' i0 ?/ `& bqryItem.SetProperty("cost", "100", "gt")
Dim results As Item = qryItem.Apply()
Dim count As Integer = results.GetItemCount()
7 @9 G0 O" |& l' }Dim i As Integer
Dim content As String = "<table>"
For i=0 to count - 1
) T5 d& @4 E. U6 e/ I4 Z, |  Dim item As Item = results.GetItemByIndex(i)
  content += "" + _
    "<tr>" + _
7 o' `4 b, V5 y) j% r6 d      "<td>" + item.GetProperty("item_number") + "</td>" + _
      "<td>" + item.GetProperty("description") + "</td>" + _
1 ?' o3 a! O& j9 }- ^! [, G5 Q! e! Z      "<td>" + item.GetProperty("cost") + "</td>" + _
% w- G' r" X; U* n  s* j) N    "</tr>"
Next
content += "</table>"

) B# g( @& ]/ S5 ODim innovator As Innovator = Me.NewInnovator()
1 P# _% t" }. f3 mreturn innovator.NewResult(content)