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/*
* 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.spi;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonProperty;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import static java.util.Collections.unmodifiableList;
import static java.util.Objects.requireNonNull;
import static java.util.stream.Collectors.toMap;
public final class ConnectorMaterializedViewDefinition
{
private final String originalSql;
private final String schema;
private final String table;
private final List baseTables;
private final Optional owner;
private final List columnMappings;
@JsonCreator
public ConnectorMaterializedViewDefinition(
@JsonProperty("originalSql") String originalSql,
@JsonProperty("schema") String schema,
@JsonProperty("table") String table,
@JsonProperty("baseTables") List baseTables,
@JsonProperty("owner") Optional owner,
@JsonProperty("columnMapping") List columnMappings)
{
this.originalSql = requireNonNull(originalSql, "originalSql is null");
this.schema = requireNonNull(schema, "schema is null");
this.table = requireNonNull(table, "table is null");
this.baseTables = unmodifiableList(new ArrayList<>(requireNonNull(baseTables, "baseTables is null")));
this.owner = requireNonNull(owner, "owner is null");
this.columnMappings = unmodifiableList(new ArrayList<>(requireNonNull(columnMappings, "columnMappings is null")));
}
@JsonIgnore
public ConnectorMaterializedViewDefinition(
String originalSql,
String schema,
String table,
List baseTables,
Optional owner,
Map> columnMappingsAsMap)
{
this(originalSql, schema, table, baseTables, owner, convertFromMapToColumnMappings(requireNonNull(columnMappingsAsMap, "columnMappings is null"), new SchemaTableName(schema, table)));
}
@JsonProperty
public String getOriginalSql()
{
return originalSql;
}
@JsonProperty
public String getSchema()
{
return schema;
}
@JsonProperty
public String getTable()
{
return table;
}
@JsonProperty
public List getBaseTables()
{
return baseTables;
}
@JsonProperty
public Optional getOwner()
{
return owner;
}
@JsonProperty
public List getColumnMappings()
{
return columnMappings;
}
@Override
public String toString()
{
StringBuilder sb = new StringBuilder("ConnectorMaterializedViewDefinition{");
sb.append("originalSql=").append(originalSql);
sb.append(",schema=").append(schema);
sb.append(",table=").append(table);
sb.append(",baseTables=").append(baseTables);
sb.append(",owner=").append(owner.orElse(null));
sb.append(",columnMappings=").append(columnMappings);
sb.append("}");
return sb.toString();
}
@JsonIgnore
public Map> getColumnMappingsAsMap()
{
return columnMappings.stream()
.collect(toMap(
mapping -> mapping.getViewColumn().getColumnName(),
mapping -> mapping.getBaseTableColumns().stream().collect(toMap(TableColumn::getTableName, TableColumn::getColumnName))));
}
@JsonIgnore
private static List convertFromMapToColumnMappings(Map> columnMappings, SchemaTableName sourceTable)
{
List columnMappingList = new ArrayList<>();
for (String sourceColumn : columnMappings.keySet()) {
TableColumn viewColumn = new TableColumn(sourceTable, sourceColumn);
List baseTableColumns = new ArrayList<>();
for (SchemaTableName baseTable : columnMappings.get(sourceColumn).keySet()) {
baseTableColumns.add(new TableColumn(baseTable, columnMappings.get(sourceColumn).get(baseTable)));
}
columnMappingList.add(new ColumnMapping(viewColumn, unmodifiableList(baseTableColumns)));
}
return unmodifiableList(columnMappingList);
}
public static final class ColumnMapping
{
private final TableColumn viewColumn;
private final List baseTableColumns;
@JsonCreator
public ColumnMapping(
@JsonProperty("viewColumn") TableColumn viewColumn,
@JsonProperty("baseTableColumns") List baseTableColumns)
{
this.viewColumn = requireNonNull(viewColumn, "viewColumn is null");
this.baseTableColumns = unmodifiableList(new ArrayList<>(requireNonNull(baseTableColumns, "baseTableColumns is null")));
}
@JsonProperty
public TableColumn getViewColumn()
{
return viewColumn;
}
@JsonProperty
public List getBaseTableColumns()
{
return baseTableColumns;
}
@Override
public String toString()
{
StringBuilder sb = new StringBuilder("ColumnMapping{");
sb.append("viewColumn=").append(viewColumn);
sb.append(",baseTableColumns=").append(baseTableColumns);
sb.append("}");
return sb.toString();
}
}
public static final class TableColumn
{
private final SchemaTableName tableName;
private final String columnName;
@JsonCreator
public TableColumn(
@JsonProperty("tableName") SchemaTableName tableName,
@JsonProperty("columnName") String columnName)
{
this.tableName = requireNonNull(tableName, "tableName is null");
this.columnName = requireNonNull(columnName, "columnName is null");
}
@JsonProperty
public SchemaTableName getTableName()
{
return tableName;
}
@JsonProperty
public String getColumnName()
{
return columnName;
}
@Override
public int hashCode()
{
return Objects.hash(tableName, columnName);
}
@Override
public boolean equals(Object o)
{
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
TableColumn that = (TableColumn) o;
return Objects.equals(this.columnName, that.columnName) &&
Objects.equals(this.tableName, that.tableName);
}
@Override
public String toString()
{
return tableName + ":" + columnName;
}
}
}
