/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate licenses
* this file to you 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.planner.projection;
import com.carrotsearch.hppc.IntSet;
import com.google.common.collect.Lists;
import io.crate.metadata.ColumnIdent;
import io.crate.planner.symbol.InputColumn;
import io.crate.planner.symbol.Symbol;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.settings.Settings;
import javax.annotation.Nullable;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class ColumnIndexWriterProjection extends AbstractIndexWriterProjection {
private List<Symbol> columnSymbols;
private List<ColumnIdent> columnIdents;
public static final ProjectionFactory<ColumnIndexWriterProjection> FACTORY =
new ProjectionFactory<ColumnIndexWriterProjection>() {
@Override
public ColumnIndexWriterProjection newInstance() {
return new ColumnIndexWriterProjection();
}
};
protected ColumnIndexWriterProjection() {}
/**
*
* @param tableName
* @param primaryKeys
* @param columns the columnIdents of all the columns to be written in order of appearance
* @param primaryKeyIndices
* @param partitionedByIndices
* @param clusteredByIndex
* @param settings
*/
public ColumnIndexWriterProjection(String tableName,
List<ColumnIdent> primaryKeys,
List<ColumnIdent> columns,
IntSet primaryKeyIndices,
IntSet partitionedByIndices,
@Nullable ColumnIdent clusteredByColumn,
int clusteredByIndex,
Settings settings,
boolean autoCreateIndices) {
super(tableName, primaryKeys, clusteredByColumn, settings, autoCreateIndices);
generateSymbols(primaryKeyIndices.toArray(), partitionedByIndices.toArray(), clusteredByIndex);
this.columnIdents = Lists.newArrayList(columns);
this.columnSymbols = new ArrayList<>(columns.size()-partitionedByIndices.size());
for (int i = 0; i < columns.size(); i++) {
if (!partitionedByIndices.contains(i)) {
this.columnSymbols.add(new InputColumn(i, null));
} else {
columnIdents.remove(i);
}
}
}
public List<Symbol> columnSymbols() {
return columnSymbols;
}
public List<ColumnIdent> columnIdents() {
return columnIdents;
}
@Override
public <C, R> R accept(ProjectionVisitor<C, R> visitor, C context) {
return visitor.visitColumnIndexWriterProjection(this, context);
}
@Override
public ProjectionType projectionType() {
return ProjectionType.COLUMN_INDEX_WRITER;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
if (!super.equals(o)) return false;
ColumnIndexWriterProjection that = (ColumnIndexWriterProjection) o;
if (!columnSymbols.equals(that.columnSymbols)) return false;
if (!columnIdents.equals(that.columnIdents)) return false;
return true;
}
@Override
public int hashCode() {
int result = super.hashCode();
result = 31 * result + (columnSymbols != null ? columnSymbols.hashCode() : 0);
result = 31 * result + (columnIdents != null ? columnIdents.hashCode() : 0);
return result;
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
if (in.readBoolean()) {
int length = in.readVInt();
columnSymbols = new ArrayList<>(length);
for (int i = 0; i < length; i++) {
columnSymbols.add(Symbol.fromStream(in));
}
}
if (in.readBoolean()) {
int length = in.readVInt();
columnIdents = new ArrayList<>(length);
for (int i = 0; i < length; i++) {
ColumnIdent columnIdent = new ColumnIdent();
columnIdent.readFrom(in);
columnIdents.add(columnIdent);
}
}
}
@Override
public void writeTo(StreamOutput out) throws IOException {
super.writeTo(out);
if (columnSymbols == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
out.writeVInt(columnSymbols.size());
for (Symbol columnSymbol : columnSymbols) {
Symbol.toStream(columnSymbol, out);
}
}
if (columnIdents == null) {
out.writeBoolean(false);
} else {
out.writeBoolean(true);
out.writeVInt(columnIdents.size());
for (ColumnIdent columnIdent : columnIdents) {
columnIdent.writeTo(out);
}
}
}
}