TableWriterMatcher.java
/*
* 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 com.facebook.presto.sql.planner.assertions;
import com.facebook.presto.Session;
import com.facebook.presto.cost.StatsProvider;
import com.facebook.presto.metadata.Metadata;
import com.facebook.presto.spi.plan.PlanNode;
import com.facebook.presto.spi.plan.TableWriterNode;
import com.facebook.presto.spi.relation.VariableReferenceExpression;
import com.facebook.presto.sql.planner.Symbol;
import java.util.List;
import static com.facebook.presto.sql.planner.assertions.MatchResult.NO_MATCH;
import static com.facebook.presto.sql.planner.assertions.MatchResult.match;
import static com.google.common.base.MoreObjects.toStringHelper;
import static com.google.common.base.Preconditions.checkState;
import static com.google.common.collect.ImmutableList.toImmutableList;
public class TableWriterMatcher
implements Matcher
{
private final List<String> columns;
private final List<String> columnNames;
public TableWriterMatcher(List<String> columns, List<String> columnNames)
{
this.columns = columns;
this.columnNames = columnNames;
}
@Override
public boolean shapeMatches(PlanNode node)
{
return node instanceof TableWriterNode;
}
@Override
public MatchResult detailMatches(PlanNode node, StatsProvider stats, Session session, Metadata metadata, SymbolAliases symbolAliases)
{
checkState(shapeMatches(node), "Plan testing framework error: shapeMatches returned false in detailMatches in %s", this.getClass().getName());
TableWriterNode tableWriterNode = (TableWriterNode) node;
if (!tableWriterNode.getColumnNames().equals(columnNames)) {
return NO_MATCH;
}
if (!columns.stream()
.map(s -> Symbol.from(symbolAliases.get(s)))
.collect(toImmutableList())
.equals(tableWriterNode.getColumns().stream().map(VariableReferenceExpression::getName).map(Symbol::new).collect(toImmutableList()))) {
return NO_MATCH;
}
return match();
}
@Override
public String toString()
{
return toStringHelper(this)
.add("columns", columns)
.add("columnNames", columnNames)
.toString();
}
}