Hi All , I run my test example in DAS beta 1.0 , it will run ok at first time , and then run at second time was report a NullPointException , error info as follow : The line is Type root = SDOUtil.createType(typeHelper, getDefaultURI(), "DataGraphRoot", false); Caused by: java.lang.NullPointerException at org.apache.tuscany.das.rdb.graphbuilder.impl.GraphBuilderMetadata.createDyna micTypes(GraphBuilderMetadata.java:124) at org.apache.tuscany.das.rdb.graphbuilder.impl.GraphBuilderMetadata.getRootTyp e(GraphBuilderMetadata.java:91) at org.apache.tuscany.das.rdb.impl.ReadCommandImpl.buildGraph(ReadCommandImpl.j ava:88) at org.apache.tuscany.das.rdb.impl.ReadCommandImpl.executeQuery(ReadCommandImpl .java:63) at com.foresee.spiderweb.dataadapter.db.DasServiceImpl.execute(DasServiceImpl.j ava:321) ... 24 more
Why is it ? My test example could run correctly in M2. Leo
