/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.kie.workbench.common.stunner.core.graph.command.impl;
import java.util.Collection;
import org.kie.workbench.common.stunner.core.command.Command;
import org.kie.workbench.common.stunner.core.command.CommandResult;
import org.kie.workbench.common.stunner.core.command.exception.BadCommandArgumentsException;
import org.kie.workbench.common.stunner.core.graph.Edge;
import org.kie.workbench.common.stunner.core.graph.Graph;
import org.kie.workbench.common.stunner.core.graph.Node;
import org.kie.workbench.common.stunner.core.graph.command.GraphCommandExecutionContext;
import org.kie.workbench.common.stunner.core.graph.command.GraphCommandResultBuilder;
import org.kie.workbench.common.stunner.core.graph.content.view.View;
import org.kie.workbench.common.stunner.core.graph.processing.index.MutableIndex;
import org.kie.workbench.common.stunner.core.rule.RuleEvaluationContext;
import org.kie.workbench.common.stunner.core.rule.RuleSet;
import org.kie.workbench.common.stunner.core.rule.RuleViolation;
public abstract class AbstractGraphCommand implements Command<GraphCommandExecutionContext, RuleViolation> {
protected abstract CommandResult<RuleViolation> check(final GraphCommandExecutionContext context);
@Override
public CommandResult<RuleViolation> allow(final GraphCommandExecutionContext context) {
// Check if rules are present.
if (null == context.getRuleManager()) {
return GraphCommandResultBuilder.SUCCESS;
}
return check(context);
}
@SuppressWarnings("unchecked")
protected Collection<RuleViolation> doEvaluate(final GraphCommandExecutionContext context,
final RuleEvaluationContext ruleEvaluationContext) {
final RuleSet ruleSet = context.getRuleSet();
return (Collection<RuleViolation>) context.getRuleManager().evaluate(ruleSet,
ruleEvaluationContext)
.violations();
}
@SuppressWarnings("unchecked")
protected MutableIndex<Node, Edge> getMutableIndex(final GraphCommandExecutionContext context) {
return (MutableIndex<Node, Edge>) context.getGraphIndex();
}
@SuppressWarnings("unchecked")
protected Graph<?, Node> getGraph(final GraphCommandExecutionContext context) {
return (Graph<?, Node>) context.getGraphIndex().getGraph();
}
@SuppressWarnings("unchecked")
protected Node<?, Edge> getNode(final GraphCommandExecutionContext context,
final String uuid) {
return context.getGraphIndex().getNode(uuid);
}
@SuppressWarnings("unchecked")
protected Edge<? extends View, Node> getViewEdge(final GraphCommandExecutionContext context,
final String uuid) {
return context.getGraphIndex().getEdge(uuid);
}
protected Node<?, Edge> checkNodeNotNull(final GraphCommandExecutionContext context,
final String uuid) {
final Node<?, Edge> e = getNode(context,
uuid);
if (null == e) {
throw new BadCommandArgumentsException(this,
uuid,
"Node not found for [" + uuid + "].");
}
return e;
}
protected Edge<? extends View, Node> checkViewEdgeNotNull(final GraphCommandExecutionContext context,
final String uuid) {
final Edge<? extends View, Node> e = getViewEdge(context,
uuid);
if (null == e) {
throw new BadCommandArgumentsException(this,
uuid,
"Edge (view) not found for [" + uuid + "].");
}
return e;
}
}