通过 Rational Team Concert API 更改枚举字段值时定期发生不可变 PropertyException

Question

通过更改我正在使用的 RTC API 工具的新 RTC 工作项中某些基于枚举的字段来解决此问题。

基本上，我在第一次更改字段时得到 ImmutablePropertyException，但下次它无一例外地工作。

想要摆脱异常。我使用的值 RTC 实际上作为该字段的有效枚举值返回给我。

Assigning RTC work item field: odc.impact a field value of -> Integrity [odc.impact.literal.l4]

EXCEPTION: Could not assign value, even though it was found in the enumeration list: [Unassigned, Installability, Standards, Integrity]

com.ibm.team.repository.common.internal.ImmutablePropertyException at com.ibm.team.repository.common.internal.util.ItemUtil$ProtectAdapter.notifyChanged(ItemUtil.java:2070) at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:380) at com.ibm.team.repository.common.model.impl.StringExtensionEntryImpl.setTypedValue(StringExtensionEntryImpl.java:178) at com.ibm.team.repository.common.model.impl.StringExtensionEntryImpl.setValue(StringExtensionEntryImpl.java:360) at org.eclipse.emf.common.util.BasicEMap.putEntry(BasicEMap.java:303) at org.eclipse.emf.common.util.BasicEMap.put(BasicEMap.java:584) at org.eclipse.emf.common.util.BasicEMap$DelegatingMap.put(BasicEMap.java:799) at com.ibm.team.repository.common.model.impl.ItemImpl.setStringExtension(ItemImpl.java:1228) at com.ibm.team.workitem.common.internal.model.impl.WorkItemImpl.setEnumeration(WorkItemImpl.java:3779) at com.ibm.team.workitem.common.internal.model.impl.WorkItemImpl.setValue(WorkItemImpl.java:2915) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:95) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:56) at java.lang.reflect.Method.invoke(Method.java:620) at com.ibm.team.repository.common.internal.util.ItemStore$ItemInvocationHandler.invoke(ItemStore.java:597) at com.sun.proxy.$Proxy18.setValue(Unknown Source) at com.rtc.vda.WorkItemInitialization.setAttributeValueEx(WorkItemInitialization.java:237) at com.rtc.vda.WorkItemInitialization.setAttributeValue(WorkItemInitialization.java:210) at com.rtc.vda.WorkItemInitialization.execute(WorkItemInitialization.java:186) at com.ibm.team.workitem.client.WorkItemOperation.execute(WorkItemOperation.java:85) at com.ibm.team.workitem.client.WorkItemOperation.doRun(WorkItemOperation.java:272) at com.ibm.team.workitem.client.WorkItemOperation.run(WorkItemOperation.java:242) at com.ibm.team.workitem.client.WorkItemOperation.run(WorkItemOperation.java:189) at com.rtc.vda.RTCUtilities.createWorkItem(RTCUtilities.java:191) at com.rtc.vda.RTCMain.main(RTCMain.java:178)

Assigning: odc.impact -> Integrity [odc.impact.literal.l4]

这是设置枚举值的代码片段：

public boolean setAttributeValueEx (IWorkItem w, String attributeKey, String valueName) {

    // (REO) Get the attribute
    IAttribute a = customAttributesMap.get(attributeKey);

    // (REO) Buffer of valid values for error reporting
    StringBuffer b = new StringBuffer();

    try {
        // (REO) Get the enumeration for this attribute from the repository (DO NOT CACHE IT OR YOU WILL HAVE PROBLEMS)
        IWorkItemClient workItemClient = (IWorkItemClient) rtcParameters.getTeamRepository().getClientLibrary(IWorkItemClient.class);
        IEnumeration<? extends ILiteral> rtcAttrEnumeration = workItemClient.resolveEnumeration(a, curMonitor);

        // (REO) Find an enum value that matches this string and assign it
        for (ILiteral literal : rtcAttrEnumeration.getEnumerationLiterals()) {
            String vName = literal.getName();
            String vId = literal.getIdentifier2().getStringIdentifier();
            b.append(",");
            b.append(vName);
            if (valueName.equalsIgnoreCase(vName)) {
                String msg2 = "Assigning: " + a.getIdentifier() + " -> " + vName + " [" + vId + "]";
                RTCMain.out(msg2);
                w.setValue(a, literal.getIdentifier2()); // (REO) SOURCE OF PERIODIC EXCEPTION
                return true;
            }
        }
    } catch (Exception e) {
        RTCMain.out("EXCEPTION: Could not assign value, even though it was found in the enumeration list:\n\t[" + b + "]");
        e.printStackTrace();
        RTCMain.out("");
        return false;
    }

    RTCMain.out("VALUE NOT FOUND: Valid values are:" + b);
    return false;
}

有人知道为什么我只收到某些字段的周期性 ImmutablePropertyException，以及为什么它在第二次调用时消失了吗？

谢谢！

Answer 1

您只需要使用传递给 execute() 调用的 workingCopy.getWorkItem() 对象，而不是成员变量中的缓存版本。 workingCopy 对象上的属性不是不可变的并且可以正常工作。

public class WorkItemCreator extends WorkItemOperation {

...

    @Override
    protected void execute(WorkItemWorkingCopy workingCopy, IProgressMonitor monitor) throws TeamRepositoryException {

        IWorkItem newWorkItem = workingCopy.getWorkItem();
        // Set attribute values on newWorkItem to avoid ImmutablePropertyExceptions

通过 Rational Team Concert API 更改枚举字段值时定期发生不可变 PropertyException

ImmutablePropertyException periodically when changing enum field's value via Rational Team Concert API

rtc