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<table class="bannerparthead" cellspacing="0" id="Table1">
<tr id="hdr">
<td class="runninghead">Perforce API for the .Net CLR</td>
<td class="product"><img alt="P4.Net" src="p4net.GIF" /></td>
</tr>
</table>
</div>
<div id="TitleRow">
<h1 class="dtH1">Comparisons with other Perforce APIs</h1>
</div>
</div>
<div id="nstext">
<H4 class="dtH4">Python Example</H4>
<P>
Let's just dive into a sample, and compare the APIs. In this case, I'll compare P4.Net using IronPython
to P4Python using standard Python. Note, I don't mean to suggest that P4.Net/IronPython is superior to P4Python/Standard Python,
I just did this to show apples-to-apples comparisons, w/o looking at individual language features.
</P>
<table x:str border=0 cellpadding=0 cellspacing=0 width=817 style='border-collapse:
collapse;table-layout:fixed;width:613pt'>
<col class=xl46 width=28 style='mso-width-source:userset;mso-width-alt:1024;
width:21pt'>
<col class=xl29 width=385 style='mso-width-source:userset;mso-width-alt:14080;
width:289pt'>
<col class=xl30 width=13 style='mso-width-source:userset;mso-width-alt:475;
width:10pt'>
<col class=xl27 width=391 style='mso-width-source:userset;mso-width-alt:14299;
width:293pt'>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl24 width=28 style='height:11.25pt;width:21pt'> </td>
<td class=xl47 width=385 style='width:289pt'># Standard Python and P4Python</td>
<td class=xl26 width=13 style='border-left:none;width:10pt'> </td>
<td class=xl67 width=391 style='width:293pt'># IronPython and P4.Net</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl32 style='height:11.25pt'> </td>
<td class=xl33> </td>
<td class=xl34 style='border-left:none'> </td>
<td class=xl35> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl48 style='height:11.25pt;border-top:none'> </td>
<td class=xl49 style='border-top:none'> </td>
<td class=xl50 style='border-top:none;border-left:none'> </td>
<td class=xl51 style='border-top:none'>import<font class="font6"> clr</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl52 style='height:11.25pt' x:num>1</td>
<td class=xl53> </td>
<td class=xl54 style='border-left:none'> </td>
<td class=xl55>from<font class="font6"> System </font><font class="font7">import</font><font
class="font6"> Array, String</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl56 style='height:11.25pt'> </td>
<td class=xl57> </td>
<td class=xl58 style='border-left:none'> </td>
<td class=xl59>clr.AddReferenceToFile('<font class="font8">P4API.dll</font><font
class="font6">')</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl36> </td>
<td class=xl37 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl36>import<font class="font6"> p4 as P4API</font></td>
<td class=xl37 style='border-left:none'> </td>
<td class=xl31>import<font class="font6"> P4API</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl36> </td>
<td class=xl37 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl48 style='height:11.25pt'> </td>
<td class=xl49>p4 = P4API.P4()</td>
<td class=xl50 style='border-left:none'> </td>
<td class=xl60>p4 = P4API.P4Connection()</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl52 style='height:11.25pt' x:num>2</td>
<td class=xl53>p4.parse_forms()</td>
<td class=xl54 style='border-left:none'> </td>
<td class=xl61> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl56 style='height:11.25pt'> </td>
<td class=xl57>p4.connect()</td>
<td class=xl58 style='border-left:none'> </td>
<td class=xl59>p4.Connect()</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29> </td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29>lname = '<font class="font8">P4NetTestingSample</font><font
class="font6">'</font></td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38>lname = '<font class="font8">P4NetTestingSample</font><font
class="font6">'</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29> </td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl40># build my label</td>
<td class=xl41 style='border-left:none'> </td>
<td class=xl42># build my label</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl48 style='height:11.25pt'> </td>
<td class=xl49>labelForm = p4.fetch_label(lname)</td>
<td class=xl50 style='border-left:none'> </td>
<td class=xl60>labelForm = p4.Fetch_Form('<font class="font8">label</font><font
class="font6">', lname)</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl52 style='height:11.25pt'> </td>
<td class=xl53>labelForm['<font class="font8">Description</font><font
class="font6">'] = '</font><font class="font8">Created for P4.Net sample</font><font
class="font6">'</font></td>
<td class=xl54 style='border-left:none'> </td>
<td class=xl61>labelForm['<font class="font8">Description</font><font
class="font6">'] = '</font><font class="font8">Created for P4.Net sample</font><font
class="font6">'</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl52 style='height:11.25pt' x:num>3</td>
<td class=xl53>view = ['<font class="font8">//guest/shawn_hladky/...</font><font
class="font6">']</font></td>
<td class=xl54 style='border-left:none'> </td>
<td class=xl61>view = Array[String](['<font class="font8">//guest/shawn_hladky/...</font><font
class="font6">'])</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl52 style='height:11.25pt'> </td>
<td class=xl53>labelForm['<font class="font8">View</font><font class="font6">']
= view</font></td>
<td class=xl54 style='border-left:none'> </td>
<td class=xl61>labelForm.ArrayFields['<font class="font8">View</font><font
class="font6">'] = view</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl56 style='height:11.25pt'> </td>
<td class=xl57>res = p4.save_label(labelForm)</td>
<td class=xl58 style='border-left:none'> </td>
<td class=xl59>res = p4.Save_Form(labelForm)</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29> </td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td rowspan=2 height=30 class=xl71 style='border-bottom:.5pt solid black;
height:22.5pt' x:num>4</td>
<td class=xl69 style='border-left:none'>if<font class="font6"> len(p4.errors)
> 0:</font></td>
<td class=xl50 style='border-left:none'> </td>
<td class=xl70>if<font class="font6"> res.HasErrors():</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl57 style='height:11.25pt;border-left:none'><span
style='mso-spacerun:yes'> </span><font class="font11">for</font><font
class="font6"> e </font><font class="font11">in</font><font class="font6">
p4.errors: print e</font></td>
<td class=xl58 style='border-left:none'> </td>
<td class=xl59><span style='mso-spacerun:yes'> </span><font class="font11">for</font><font
class="font6"> e </font><font class="font11">in</font><font class="font6">
res.Errors: print e</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29> </td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl40># My list of changes.<span style='mso-spacerun:yes'>
</span>This is totally arbitrary</td>
<td class=xl41 style='border-left:none'> </td>
<td class=xl42># My list of changes.<span style='mso-spacerun:yes'>
</span>This is totally arbitrary</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29>changes=['<font class="font8">5774</font><font class="font6">',
'</font><font class="font8">5680</font><font class="font6">', '</font><font
class="font8">5636</font><font class="font6">', '</font><font class="font8">5444</font><font
class="font6">']</font></td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38>changes=['<font class="font8">5774</font><font class="font6">',
'</font><font class="font8">5680</font><font class="font6">', '</font><font
class="font8">5636</font><font class="font6">', '</font><font class="font8">5444</font><font
class="font6">']</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29> </td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29>sorted_changes = changes.sort()</td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38>sorted_changes = changes.sort()</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29> </td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl40># dictionary: keyed by file, value = revision</td>
<td class=xl41 style='border-left:none'> </td>
<td class=xl42># dictionary: keyed by file, value = revision</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29>filerevs = {}</td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38>filerevs = {}</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29> </td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl40># spin the description on each file</td>
<td class=xl41 style='border-left:none'> </td>
<td class=xl42># spin the description on each file</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl62 style='height:11.25pt' x:num>5</td>
<td class=xl68>for<font class="font6"> chg </font><font class="font10">in</font><font
class="font6"> p4.run_describe('</font><font class="font8">-s</font><font
class="font6">', *changes):</font></td>
<td class=xl63 style='border-left:none'> </td>
<td class=xl64>for<font class="font6"> chg </font><font class="font10">in</font><font
class="font6"> p4.Run('</font><font class="font8">describe</font><font
class="font6">', '</font><font class="font8">-s</font><font class="font6">',
*changes):</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td rowspan=2 height=30 class=xl71 style='border-bottom:.5pt solid black;
height:22.5pt;border-top:none' x:num>6</td>
<td class=xl49 style='border-top:none;border-left:none'><span
style='mso-spacerun:yes'> </span>depotFiles = chg['<font class="font8">depotFile</font><font
class="font6">']</font></td>
<td class=xl50 style='border-top:none;border-left:none'> </td>
<td class=xl60 style='border-top:none'><span style='mso-spacerun:yes'>
</span>depotFiles = chg.ArrayFields['<font class="font8">depotFile</font><font
class="font6">']</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl57 style='height:11.25pt;border-left:none'><span
style='mso-spacerun:yes'> </span>revisions<span style='mso-spacerun:yes'>
</span>= chg['<font class="font8">rev</font><font class="font6">']</font></td>
<td class=xl58 style='border-left:none'> </td>
<td class=xl59><span style='mso-spacerun:yes'> </span>revisions<span
style='mso-spacerun:yes'> </span>= chg.ArrayFields['<font class="font8">rev</font><font
class="font6">']</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl24 style='height:11.25pt;border-top:none'> </td>
<td class=xl25 style='border-top:none'><span style='mso-spacerun:yes'>
</span><font class="font10">for</font><font class="font6"> i </font><font
class="font10">in</font><font class="font6"> range(0, len(depotFiles)):</font></td>
<td class=xl26 style='border-top:none;border-left:none'> </td>
<td class=xl39 style='border-top:none'><span style='mso-spacerun:yes'>
</span><font class="font10">for</font><font class="font6"> i </font><font
class="font10">in</font><font class="font6"> range(0, len(depotFiles)):</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29><span style='mso-spacerun:yes'> </span>key,value =
depotFiles[i], revisions[i]</td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38><span style='mso-spacerun:yes'> </span>key,value =
depotFiles[i], revisions[i]</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29><span style='mso-spacerun:yes'>
</span>filerevs[key]=value</td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38><span style='mso-spacerun:yes'>
</span>filerevs[key]=value</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29> </td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl40># convert the dictionary to a list</td>
<td class=xl41 style='border-left:none'> </td>
<td class=xl42># convert the dictionary to a list</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29>flist = []</td>
<td class=xl41 style='border-left:none'> </td>
<td class=xl38>flist = []</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl43>for<font class="font6"> k,v </font><font class="font10">in</font><font
class="font6"> filerevs.items():</font></td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl45>for<font class="font6"> k,v </font><font class="font10">in</font><font
class="font6"> filerevs.items():</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29><span style='mso-spacerun:yes'>
</span>flist.append("%s#%s" % (k,v))</td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38><span style='mso-spacerun:yes'>
</span>flist.append("%s#%s" % (k,v))</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl32 style='height:11.25pt'> </td>
<td class=xl33> </td>
<td class=xl34 style='border-left:none'> </td>
<td class=xl35> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl48 style='height:11.25pt;border-top:none'> </td>
<td class=xl65 style='border-top:none'># now I want to run in non-parsed mode</td>
<td class=xl66 style='border-top:none;border-left:none'> </td>
<td class=xl60 style='border-top:none'> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl52 style='height:11.25pt'> </td>
<td class=xl53>p4.disconnect()</td>
<td class=xl54 style='border-left:none'> </td>
<td class=xl61> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl52 style='height:11.25pt'> </td>
<td class=xl53>p4 = P4API.P4()</td>
<td class=xl54 style='border-left:none'> </td>
<td class=xl61> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl52 style='height:11.25pt' x:num>7</td>
<td class=xl53>p4.connect()</td>
<td class=xl54 style='border-left:none'> </td>
<td class=xl61> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl52 style='height:11.25pt'> </td>
<td class=xl53> </td>
<td class=xl54 style='border-left:none'> </td>
<td class=xl61> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl56 style='height:11.25pt'> </td>
<td class=xl57>out = p4.run('<font class="font8">labelsync</font><font
class="font6">', '</font><font class="font8">-l</font><font class="font6">',
lname, *flist)</font></td>
<td class=xl58 style='border-left:none'> </td>
<td class=xl59>out = p4.RunUnParsed('<font class="font8">labelsync</font><font
class="font6">', '</font><font class="font8">-l</font><font class="font6">',
lname, *flist)</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29> </td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl43>for<font class="font6"> s </font><font class="font10">in</font><font
class="font6"> out: </font><font class="font10">print</font><font
class="font6"> s</font></td>
<td class=xl44 style='border-left:none'> </td>
<td class=xl45>for<font class="font6"> s </font><font class="font10">in</font><font
class="font6"> out: </font><font class="font10">print</font><font
class="font6"> s</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29> </td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl40># delete the label to keep the public depot clean :-)</td>
<td class=xl41 style='border-left:none'> </td>
<td class=xl42># delete the label to keep the public depot clean :-)</td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29>p4.run('<font class="font8">label</font><font class="font6">',
'</font><font class="font8">-d</font><font class="font6">', lname)</font></td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38>p4.RunUnParsed('<font class="font8">label</font><font
class="font6">', '</font><font class="font8">-d</font><font class="font6">',
lname)</font></td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl28 style='height:11.25pt'> </td>
<td class=xl29> </td>
<td class=xl30 style='border-left:none'> </td>
<td class=xl38> </td>
</tr>
<tr height=15 style='height:11.25pt'>
<td height=15 class=xl32 style='height:11.25pt'> </td>
<td class=xl33>p4.disconnect()</td>
<td class=xl34 style='border-left:none'> </td>
<td class=xl35>p4.Disconnect()</td>
</tr>
<![if supportMisalignedColumns]>
<tr height=0 style='display:none'>
<td width=28 style='width:21pt'></td>
<td width=385 style='width:289pt'></td>
<td width=13 style='width:10pt'></td>
<td width=391 style='width:293pt'></td>
</tr>
<![endif]>
</table>
<H4 class="dtH4">Block 1</H4>
<p>
This is some overhead required for IronPython. It will load the CLR, and P4.Net.
</p>
<H4 class="dtH4">Block 2</H4>
<p>
This chunk of code is establishing a connection to the Perforce server. There are a couple things
unique to P4.Net worth noting here. Classes in P4.Net are more explicitly named. Here the connection
class is named P4Connection. Also, while were talking about naming, P4.Net uses the .Net conventions,
and all Method names use cammel case.
</p>
<p>
Also, note that P4.Net does not need the parse_forms() method. P4.Net is designed to be more statically
typed than P4Python/P4Ruby/P4Perl. You use different methods to retrieve tagged vs. untagged output. Therefore,
P4.Net auto-manages the connection, and will dynamically switch modes in the native C++ API when needed.
</p>
<H4 class="dtH4">Block 3</H4>
<p>
There's several things going on in this chunk, so let's break it down line-by-line:
</p>
<p>
</p>
<hr />
<div id="footer">
<p>
<a href="Copyright.html">Copyright 2006 Shawn Hladky</a>
</p>
<p>
</p>
</div>
</div>
</body>
</html>
| # | Change | User | Description | Committed | |
|---|---|---|---|---|---|
| #5 | 5830 | Shawn Hladky | P4.Net: reorg to support release branches | ||
| #4 | 5824 | Shawn Hladky | P4.Net: Last bits of documentation for 0.9 | ||
| #3 | 5815 | Shawn Hladky |
P4.Net: more documentation will build strong-named assemblies now. |
||
| #2 | 5812 | Shawn Hladky | P4.Net: More documentation. | ||
| #1 | 5798 | Shawn Hladky |
P4.Net... still not ready for beta Added license to all files Added several doc files Misc bugs |