70 lines
2.5 KiB
Java
70 lines
2.5 KiB
Java
// Copyright (C) 2011 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package gerrit;
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import com.google.gerrit.reviewdb.client.Account;
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import com.google.gerrit.server.AnonymousUser;
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import com.google.gerrit.server.CurrentUser;
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import com.google.gerrit.server.PeerDaemonUser;
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import com.google.gerrit.server.rules.StoredValues;
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import com.googlecode.prolog_cafe.exceptions.EvaluationException;
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import com.googlecode.prolog_cafe.exceptions.PrologException;
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import com.googlecode.prolog_cafe.lang.IntegerTerm;
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import com.googlecode.prolog_cafe.lang.Operation;
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import com.googlecode.prolog_cafe.lang.Predicate;
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import com.googlecode.prolog_cafe.lang.Prolog;
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import com.googlecode.prolog_cafe.lang.StructureTerm;
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import com.googlecode.prolog_cafe.lang.SymbolTerm;
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import com.googlecode.prolog_cafe.lang.Term;
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public class PRED_current_user_1 extends Predicate.P1 {
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private static final SymbolTerm user = SymbolTerm.intern("user", 1);
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private static final SymbolTerm anonymous = SymbolTerm.intern("anonymous");
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private static final SymbolTerm peerDaemon = SymbolTerm.intern("peer_daemon");
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public PRED_current_user_1(Term a1, Operation n) {
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arg1 = a1;
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cont = n;
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}
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@Override
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public Operation exec(Prolog engine) throws PrologException {
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engine.setB0();
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Term a1 = arg1.dereference();
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CurrentUser curUser = StoredValues.CURRENT_USER.getOrNull(engine);
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if (curUser == null) {
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throw new EvaluationException("Current user not available in this rule type");
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}
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Term resultTerm;
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if (curUser.isIdentifiedUser()) {
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Account.Id id = curUser.getAccountId();
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resultTerm = new IntegerTerm(id.get());
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} else if (curUser instanceof AnonymousUser) {
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resultTerm = anonymous;
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} else if (curUser instanceof PeerDaemonUser) {
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resultTerm = peerDaemon;
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} else {
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throw new EvaluationException("Unknown user type");
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}
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if (!a1.unify(new StructureTerm(user, resultTerm), engine.trail)) {
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return engine.fail();
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}
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return cont;
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}
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}
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