Purpose of DesigntimeService

Hi all,

what is the purpose of com.adobe.livecycle.design.DesigntimeComponent (DesigntimeComponent) in livecycle.

Property Descriptor is showing as below(only copying part of descriptor.xml):

<operations>

        <operation anonymous-access="false" method="createApplication" name="createApplication">

          <transaction-propagation>Required</transaction-propagation>

          <input-parameter name="aRequest" required="true" title="" type="com.adobe.livecycle.design.infomodel.resource.ApplicationResource"/>

          <output-parameter name="aResult" type="com.adobe.livecycle.design.infomodel.resource.ApplicationResource"/>

        </operation>

        <operation anonymous-access="false" method="createFolder" name="createFolder">

          <transaction-propagation>Required</transaction-propagation>

          <input-parameter name="applicationId" required="true" title="" type="com.adobe.livecycle.design.infomodel.resource.ResourceIdentifier"/>

          <input-parameter name="aRequest" required="true" title="" type="com.adobe.livecycle.design.infomodel.resource.FolderResource"/>

          <output-parameter name="aResult" type="com.adobe.livecycle.design.infomodel.resource.FolderResource"/>

        </operation>

        <operation anonymous-access="false" method="createTLO" name="createTLO">

          <transaction-propagation>Required</transaction-propagation>

          <input-parameter name="applicationId" required="true" title="" type="com.adobe.livecycle.design.infomodel.resource.ResourceIdentifier"/>

          <input-parameter name="aRequest" required="true" title="" type="com.adobe.livecycle.design.infomodel.resource.TLOResource"/>

          <input-parameter name="keeplock" required="true" title="" type="boolean"/>

          <output-parameter name="aResult" type="com.adobe.livecycle.design.infomodel.resource.TLOResource"/>

        </operation>

        <operation anonymous-access="false" method="updateApplication" name="updateApplication">

          <transaction-propagation>Required</transaction-propagation>

          <input-parameter name="aRequest" required="true" title="" type="com.adobe.livecycle.design.infomodel.resource.ApplicationResource"/>

          <output-parameter name="aResult" type="com.adobe.livecycle.design.infomodel.resource.ApplicationResource"/>

        </operation>

        <operation anonymous-access="false" method="updateTLO" name="updateTLO">

          <transaction-propagation>Required</transaction-propagation>

          <input-parameter name="aRequest" required="true" title="" type="com.adobe.livecycle.design.infomodel.resource.TLOResource"/>

          <input-parameter name="keeplock" required="true" title="" type="boolean"/>

          <output-parameter name="aResult" type="com.adobe.livecycle.design.infomodel.resource.TLOResource"/>

        </operation>

        <operation anonymous-access="false" method="deleteApplication" name="deleteApplication">

          <transaction-propagation>Required</transaction-propagation>

          <input-parameter name="aRequest" required="true" title="" type="com.adobe.livecycle.design.infomodel.resource.ResourceIdentifier"/>

        </operation>

        <operation anonymous-access="false" method="deleteFolder" name="deleteFolder">

          <transaction-propagation>Required</transaction-propagation>

          <input-parameter name="aRequest" required="true" title="" type="com.adobe.livecycle.design.infomodel.resource.ResourceIdentifier"/>

        </operation>

        <operation anonymous-access="false" method="deleteTLO" name="deleteTLO">

          <transaction-propagation>Required</transaction-propagation>

          <input-parameter name="aRequest" required="true" title="" type="com.adobe.livecycle.design.infomodel.resource.ResourceIdentifier"/>

        </operation>

        <operation anonymous-access="false" method="deleteRelationship" name="deleteRelationship">

          <transaction-propagation>Required</transaction-propagation>

          <input-parameter name="sourceResourceId" required="true" title="" type="com.adobe.livecycle.design.infomodel.resource.ResourceIdentifier"/>

          <input-parameter name="targetResourceId" required="true" title="" type="com.adobe.livecycle.design.infomodel.resource.ResourceIdentifier"/>

          <input-parameter name="type" required="true" title="" type="int"/>

        </operation>

while installing we are getting below errors:

server.log.:  at com.adobe.livecycle.design.service.DesigntimeServiceImpl$58.doInTransaction(DesigntimeSer viceImpl.java:2197)

server.log.:  at com.adobe.livecycle.design.service.DesigntimeServiceImpl.getDescendantApplication(Designt imeServiceImpl.java:2192)

server.log.2013-07-17:2013-07-17 23:56:38,871 ERROR [STDERR] (http-0.0.0.0-8080-6) ALC-DSC-000-000: com.adobe.livecycle.design.client.DesigntimeServiceException: Internal error.

server.log.2013-07-17:2013-07-17 23:57:27,843 ERROR [STDERR] (http-0.0.0.0-8080-6)      at com.adobe.livecycle.design.service.DesigntimeServiceImpl$58.doInTransaction(DesigntimeSer viceImpl.java:2197)

server.log.2013-07-17:2013-07-17 23:57:27,854 ERROR [STDERR] (http-0.0.0.0-8080-6)      at com.adobe.livecycle.design.service.DesigntimeServiceImpl.getDescendantApplication(Designt imeServiceImpl.java:2192

Please let me know what would be cause for above errors and what exactly DesintimeComponent will do.