APEX 4.0.2 Project Gantt Chart - Error Code: 2002 Message: Empty input

Question

Hi
I have created a brand new page containing a Project Gantt Chart region. The Gantt chart is designed to track the progress of a job over time. The page has one chart series containing the following SQL.
SELECT null LINK,
stage NAME,
rownum ID,
null PARENT_ID,
trunc(start_date) ACTUAL_START,
trunc(completion_date) ACTUAL_END,
decode(completion_date, null, 0, 100) PROGRESS
FROM tracking
WHERE job_reference = '889343'
This SQL statement returns values from SQL Developer and from the SQL Workshop > SQL Commands from within APEX itself.
The problem is that when I run the page the following error displays inside the region
Category: 2000
Error code: 2002
Message: Empty input
Environment Information
Application Express 4.0.2.00.07. - Clean installation not upgraded from APEX 3
Using Firefox 3.6.15
Issue identical in IE
DB version - Oracle Database 11g Release 11.2.0.1.0 - 64bit Production
I'm really stuck so I hope someone can help me out. I really would appreciate it.
Thanks
Kylie

Answer 1

Debug mode doesn't appear to have picked anything up that looks out of the ordinary to me or raises any alarm bells.
This is the XML with a reduced number of records returned.
<anygantt>
−
<settings>
−
<title align="Center" position="Top">
<text>Resources Gantt</text>
−
<font_style>
<font face="Tahoma" size="2" color="0x000000"/>
</font_style>
</title>
<outer_margin left="0" top="0" right="0" bottom="0"/>
−
<background>
<fill type="Solid" color="0xffffff" opacity="0"/>
<border enabled="false"/>
<corners type="Square"/>
</background>
<navigation enabled="true"/>
−
<locale>
−
<date_time_format week_starts_from_monday="True">
−
<months>
−
<names>
January,February,March,April,May,June,July,August,September,October,November,December
</names>
<short_names>Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec</short_names>
</months>
−
<week_days>
−
<names>
Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday
</names>
<short_names>Sun,Mon,Tue,Wed,Thu,Fri,Sat</short_names>
</week_days>
−
<format>
<full>%yyyy.%MM.%dd.%HH.%mm.%ss</full>
<date>%yyyy.%MM.%dd</date>
<time>%HH.%mm.%ss</time>
</format>
</date_time_format>
</locale>
</settings>
−
<datagrid enabled="true">
−
<columns>
−
<column width="40" cell_align="Center">
−
<header>
<text>ID</text>
</header>
<format>{%ID}</format>
</column>
−
<column attribute_name="Name" width="180" cell_align="Center">
−
<header>
<text>Name</text>
</header>
<format>{%Name}</format>
</column>
−
<column attribute_name="ActualStart" width="80" cell_align="Center">
−
<header>
<text>Start Date</text>
</header>
<format>{%ActualStart}{dateTimeFormat:%dd-%MMM-%yyyy}</format>
</column>
−
<column attribute_name="ActualEnd" width="80" cell_align="Center">
−
<header>
<text>End Date</text>
</header>
<format>{%ActualEnd}{dateTimeFormat:%dd-%MMM-%yyyy}</format>
</column>
</columns>
</datagrid>
−
<timeline>
<plot line_height="30" item_height="15" item_padding="5"/>
</timeline>
−
<styles>
−
<period_styles>
−
<period_style name="defaultStyle">
−
<tooltip enabled="true">
−
<text>
Task: {%Name}
Start Date: {%ActualStart}{dateTimeFormat:%dd-%MMM-%yyyy}
End Date: {%ActualEnd}{dateTimeFormat:%dd-%MMM-%yyyy}
Complete: {%Complete}%
</text>
<font color="Black"/>
</tooltip>
−
<bar_style>
−
<middle shape="Full">
<fill enabled="true" type="Solid" opacity="0.8" color="0x1D8BD1"/>
<border enabled="true" type="Solid" color="Black"/>
</middle>
−
<states>
−
<hover>
−
<middle>
<border enabled="true" type="Solid" color="Red"/>
</middle>
</hover>
</states>
−
<start>
−
<marker type="Rhomb">
<fill enabled="true" type="Solid" opacity="0.8" color="0x1D8BD1"/>
<border enabled="true" type="Solid" color="Black"/>
</marker>
</start>
−
<end>
−
<marker type="Rhomb">
<fill enabled="true" type="Solid" opacity="0.8" color="0x1D8BD1"/>
<border enabled="true" type="Solid" color="Black"/>
</marker>
</end>
</bar_style>
</period_style>
</period_styles>
−
<task_styles>
−
<task_style name="defaultStyle">
−
<tooltip enabled="true">
−
<text>
Task: {%Name}
Start Date: {%ActualStart}{dateTimeFormat:%dd-%MMM-%yyyy}
End Date: {%ActualEnd}{dateTimeFormat:%dd-%MMM-%yyyy}
Complete: {%Complete}%
</text>
<font color="Black"/>
</tooltip>
−
<row_datagrid>
−
<tooltip enabled="true">
−
<text>
Task: {%Name}
Start Date: {%ActualStart}{dateTimeFormat:%dd-%MMM-%yyyy}
End Date: {%ActualEnd}{dateTimeFormat:%dd-%MMM-%yyyy}
Complete: {%Complete}%
</text>
<font color="Black"/>
</tooltip>
</row_datagrid>
−
<actual>
−
<bar_style>
−
<middle shape="Full">
<fill enabled="true" type="Solid" opacity="0.8" color="0x1D8BD1"/>
<border enabled="true" type="Solid" color="Black"/>
</middle>
−
<states>
−
<hover>
−
<middle>
<border enabled="true" type="Solid" color="Red"/>
</middle>
</hover>
</states>
−
<start>
−
<marker type="Rhomb">
<fill enabled="true" type="Solid" opacity="0.8" color="0x1D8BD1"/>
<border enabled="true" type="Solid" color="Black"/>
</marker>
</start>
−
<end>
−
<marker type="Rhomb">
<fill enabled="true" type="Solid" opacity="0.8" color="0x1D8BD1"/>
<border enabled="true" type="Solid" color="Black"/>
</marker>
</end>
</bar_style>
</actual>
−
<progress>
−
<bar_style>
−
<middle shape="Full">
<fill enabled="true" type="Solid" opacity="0.8" color="0xF1683C"/>
<border enabled="true" type="Solid" color="Black"/>
</middle>
−
<start>
−
<marker type="Rhomb">
<fill enabled="true" type="Solid" opacity="0.8" color="0xF1683C"/>
<border enabled="true" type="Solid" color="Black"/>
</marker>
</start>
−
<end>
−
<marker type="Rhomb">
<fill enabled="true" type="Solid" opacity="0.8" color="0xF1683C"/>
<border enabled="true" type="Solid" color="Black"/>
</marker>
</end>
</bar_style>
</progress>
−
<baseline>
−
<bar_style>
−
<middle shape="Full">
<fill enabled="true" type="Solid" opacity="0.8" color="0x2AD62A"/>
<border enabled="true" type="Solid" color="Black"/>
</middle>
−
<start>
−
<marker type="Rhomb">
<fill enabled="true" type="Solid" opacity="0.8" color="0x2AD62A"/>
<border enabled="true" type="Solid" color="Black"/>
</marker>
</start>
−
<end>
−
<marker type="Rhomb">
<fill enabled="true" type="Solid" opacity="0.8" color="0x2AD62A"/>
<border enabled="true" type="Solid" color="Black"/>
</marker>
</end>
</bar_style>
</baseline>
</task_style>
</task_styles>
−
<resource_styles>
−
<resource_style>
−
<row_datagrid>
−
<tooltip enabled="true">
−
<text>
Task: {%Name}
Start Date: {%ActualStart}{dateTimeFormat:%dd-%MMM-%yyyy}
End Date: {%ActualEnd}{dateTimeFormat:%dd-%MMM-%yyyy}
Complete: {%Complete}%
</text>
<font color="Black"/>
</tooltip>
</row_datagrid>
</resource_style>
</resource_styles>
−
<defaults>
−
<task>
−
<task_style>
−
<row_datagrid>
−
<tooltip enabled="true">
−
<text>
Task: {%Name}
Start Date: {%ActualStart}{dateTimeFormat:%dd-%MMM-%yyyy}
End Date: {%ActualEnd}{dateTimeFormat:%dd-%MMM-%yyyy}
Complete: {%Complete}%
</text>
<font color="Black"/>
</tooltip>
</row_datagrid>
</task_style>
</task>
</defaults>
</styles>
−
<project_chart>
−
<tasks>
<task id="1" parent="" name="STAGE1" actual_start="2010.08.11 12.08.00" actual_end="" progress="0" style="defaultStyle"/>
<task id="2" parent="" name="STAGE2" actual_start="" actual_end="" progress="0" style="defaultStyle"/>
<task id="3" parent="" name="STAGE3" actual_start="2010.07.27 12.07.00" actual_end="2010.08.06 12.08.00" progress="100" style="defaultStyle"/>
<task id="4" parent="" name="STAGE4" actual_start="" actual_end="" progress="0" style="defaultStyle"/>
<task id="5" parent="" name="STAGE5" actual_start="" actual_end="" progress="0" style="defaultStyle"/>
</tasks>
</project_chart>
</anygantt>
Thank you for your assistance.
Regards
Kylie