X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.db.impl%2Fsrc%2Forg%2Fsimantics%2Fdb%2Fimpl%2Fquery%2FAsyncReadEntry.java;h=e6d42750d37b9caf62196bd50c043b802093d7e6;hb=277b1c7fb3fdd8effb4bf2b447358d0e4ef0e302;hp=010f554463373ace1edf3ac21cef13a4cc17122a;hpb=0ae2b770234dfc3cbb18bd38f324125cf0faca07;p=simantics%2Fplatform.git diff --git a/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/AsyncReadEntry.java b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/AsyncReadEntry.java index 010f55446..e6d42750d 100644 --- a/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/AsyncReadEntry.java +++ b/bundles/org.simantics.db.impl/src/org/simantics/db/impl/query/AsyncReadEntry.java @@ -1,5 +1,5 @@ /******************************************************************************* - * Copyright (c) 2007, 2010 Association for Decentralized Information Management + * Copyright (c) 2007, 2018 Association for Decentralized Information Management * in Industry THTH ry. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 @@ -11,171 +11,220 @@ *******************************************************************************/ package org.simantics.db.impl.query; -import java.util.ArrayList; - import org.simantics.db.AsyncReadGraph; +import org.simantics.db.exception.DatabaseException; +import org.simantics.db.exception.RuntimeDatabaseException; +import org.simantics.db.impl.BlockingAsyncProcedure; import org.simantics.db.impl.DebugPolicy; +import org.simantics.db.impl.graph.AsyncBarrierImpl; import org.simantics.db.impl.graph.ReadGraphImpl; +import org.simantics.db.impl.query.QueryProcessor.SessionTask; import org.simantics.db.procedure.AsyncProcedure; import org.simantics.db.request.AsyncRead; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +final public class AsyncReadEntry extends CacheEntryBase> implements AsyncProcedure { -final public class AsyncReadEntry extends CacheEntryBase { + private static final Logger LOGGER = LoggerFactory.getLogger(AsyncReadEntry.class); protected AsyncRead request; - public AsyncReadEntry(AsyncRead request) { - this.request = request; - if(DebugPolicy.QUERY_STATE) System.out.println("[QUERY STATE]: created " + this); + AsyncReadEntry(AsyncRead request) { + this.request = request; + if (DebugPolicy.QUERY_STATE) + System.out.println("[QUERY STATE]: created " + this); } @Override int makeHash() { - return request.hashCode(); + return request.hashCode(); } - + @Override public Object getOriginalRequest() { return request; } - + @Override public void discard() { - super.discard(); - //request = null; - setResult(null); + super.discard(); + setResult(null); } - - final public void addOrSet(AsyncReadGraph graph, Object item) { - assert(isPending()); - -// ArrayList> p = null; - - synchronized(this) { - - setResult(item); - setReady(); -// p = procs; -// procs = null; - - } - -// if(p != null) -// for(AsyncProcedure proc : p) { -// proc.execute(graph, (T)item); -//// proc.first.execute(graph, (T)item); -//// proc.second.dec(); -// } - - } - - public void except(AsyncReadGraph graph, Throwable t) { - - assert(isPending()); - -// ArrayList> p = null; - synchronized(this) { - + assert (isPending()); + + synchronized (this) { except(t); -//// p = procs; -// procs = null; - } -// if(p != null) -// for(AsyncProcedure proc : p) { -// proc.exception(graph, t); -// } - } - - + @Override final public Query getQuery() { - - return new Query() { - @Override - public void recompute(ReadGraphImpl graph, Object provider, CacheEntry entry) { - - QueryProcessor qp = (QueryProcessor)provider; + return new Query() { - final ReadGraphImpl parentGraph = ReadGraphImpl.forRecompute(entry, qp); + @Override + public void recompute(ReadGraphImpl graph) { - try { + try { - request.perform(parentGraph , new AsyncProcedure() { + BlockingAsyncProcedure proc = new BlockingAsyncProcedure<>(graph, new AsyncProcedure() { @Override public void execute(AsyncReadGraph graph, T result) { - addOrSet(graph, result); + setResult(result); + setReady(); } - - @Override - public void exception(AsyncReadGraph graph, Throwable t) { - except(t); + + @Override + public void exception(AsyncReadGraph graph, Throwable t) { + except(t); } - }); + }, request); - } catch (Throwable t) { - except(t); + request.perform(graph, proc); + + proc.get(); + + } catch (Throwable t) { + except(t); } - - } - - @Override - public void removeEntry(QueryProcessor qp) { - qp.asyncReadMap.remove(request); - } - - @Override - public int type() { - return request.getFlags(); - } - - @Override - public String toString() { - if(request == null) return "DISCARDED"; - else if(isExcepted()) return request.toString() + " " + getResult(); - else return request.toString() + " " + statusOrException; - } - + + } + + @Override + public void removeEntry(QueryProcessor qp) { + qp.cache.remove(AsyncReadEntry.this); + } + + @Override + public int type() { + return request.getFlags(); + } + + @Override + public String toString() { + if (request == null) + return "DISCARDED"; + else if (isExcepted()) + return request.toString() + " " + getResult(); + else + return request.toString() + " " + statusOrException; + } + }; - + } - public void performFromCache(ReadGraphImpl graph, Object provider, Object procedure) { - - AsyncProcedure proc = (AsyncProcedure)procedure; + @Override + public Object performFromCache(ReadGraphImpl graph, AsyncProcedure proc) { + + if (isExcepted()) { - if(isExcepted()) { - try { - proc.exception(graph, (Throwable)getResult()); + proc.exception(graph, (Throwable) getResult()); } catch (Throwable t) { - t.printStackTrace(); + LOGGER.error("performFromCache proc.exception failed", t); } - + } else { - + try { - proc.execute(graph, (T)getResult()); + T result = (T) getResult(); + proc.execute(graph, result); } catch (Throwable t) { - t.printStackTrace(); + LOGGER.error("performFromCache proc.execute failed", t); } + + } + + return getResult(); + + } + + public static T computeForEach(ReadGraphImpl graph, AsyncRead request, AsyncReadEntry entry, + AsyncProcedure procedure_, boolean needsToBlock) throws DatabaseException { + + AsyncProcedure procedure = entry != null ? entry : procedure_; + + ReadGraphImpl queryGraph = graph.withParent(entry); + + BlockingAsyncProcedure proc = new BlockingAsyncProcedure<>(queryGraph, null, request); + + class AsyncTask extends SessionTask { + + T result; + DatabaseException exception; + public AsyncTask(ReadGraphImpl graph) { + super(graph); + } + + @Override + public void run(int thread) { + if(needsToBlock) proc.waitBarrier(); + if(proc.isDone()) { + try { + result = (T)proc.get(); + if(procedure != null) procedure.execute(graph, result); + } catch (DatabaseException e) { + if(procedure != null) procedure.exception(graph, e); + exception = e; + } catch (Throwable t) { + DatabaseException dbe = new DatabaseException(t); + if(procedure != null) procedure.exception(graph, dbe); + exception = dbe; + } finally { + if (entry != null) + entry.performFromCache(queryGraph, procedure_); + } + } else { + graph.processor.schedule(this); + } + } + + } + + request.perform(queryGraph, proc); + + AsyncTask task = new AsyncTask(graph); + + if(needsToBlock) task.run(0); + else if (proc.isDone()) task.run(0); + else { + graph.processor.schedule(task); + return null; } - - } - - @Override - public String toString() { - if(isDiscarded()) return "DISCARDED " + request.toString(); - else if(isExcepted()) return request.toString() + " " + getResult(); - else return request.toString() + " " + statusOrException; - } + + if(task.exception != null) throw task.exception; + else return task.result; + + } + + @Override + public String toString() { + if (isDiscarded()) + return "DISCARDED " + request.toString(); + else if (isExcepted()) + return request.toString() + " " + getResult(); + else + return request.toString() + " " + statusOrException; + } + + @Override + public void execute(AsyncReadGraph graph, T result) { + setResult(result); + setReady(); + } + + @Override + public void exception(AsyncReadGraph graph, Throwable throwable) { + except(throwable); + } }