protected SModel loadHistoryModel(String state) {
if (state != null) {
try {
final Wrappers._T<SModel> loadedModel =
new Wrappers._T<SModel>(
PersistenceUtil.loadBinaryModel(Base64Converter.decode(state.getBytes())));
ListSequence.fromList(SModelOperations.nodes(loadedModel.value, null))
.where(
new IWhereFilter<SNode>() {
public boolean accept(SNode it) {
return !(it.getConcept().isValid());
}
})
.visitAll(
new IVisitor<SNode>() {
public void visit(SNode it) {
if ((SNodeOperations.getNodeAncestor(
it,
MetaAdapterFactory.getInterfaceConcept(
0xde1ad86d6e504a02L,
0xb306d4d17f64c375L,
0x5f195a051bd47defL,
"jetbrains.mps.console.base.structure.HistoryItem"),
false,
false)
!= null)) {
SNodeOperations.deleteNode(
SNodeOperations.getNodeAncestor(
it,
MetaAdapterFactory.getInterfaceConcept(
0xde1ad86d6e504a02L,
0xb306d4d17f64c375L,
0x5f195a051bd47defL,
"jetbrains.mps.console.base.structure.HistoryItem"),
false,
false));
if (LOG.isEnabledFor(Level.ERROR)) {
LOG.error(
"Unknown concept on loading console history: removing enclosing history item");
}
} else {
loadedModel.value = null;
if (LOG.isEnabledFor(Level.ERROR)) {
LOG.error(
"Unknown concept on loading console history: not loading history");
}
}
}
});
return loadedModel.value;
} catch (RuntimeException e) {
if (LOG.isEnabledFor(Level.ERROR)) {
LOG.error(
"Console history was not loaded. Maybe you are opening project from previous MPS versions?");
}
} catch (Throwable e) {
if (LOG.isEnabledFor(Level.ERROR)) {
LOG.error("Error on loading console history.", e);
}
}
}
return null;
}