org.apache.flink.table.data.utils.JoinedRowData Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.
*/
package org.apache.flink.table.data.utils;
import org.apache.flink.annotation.PublicEvolving;
import org.apache.flink.table.data.ArrayData;
import org.apache.flink.table.data.DecimalData;
import org.apache.flink.table.data.MapData;
import org.apache.flink.table.data.RawValueData;
import org.apache.flink.table.data.RowData;
import org.apache.flink.table.data.StringData;
import org.apache.flink.table.data.TimestampData;
import org.apache.flink.types.RowKind;
import javax.annotation.Nullable;
import java.util.Objects;
/**
* An implementation of {@link RowData} which is backed by two concatenated {@link RowData}.
*
* This implementation is mutable to allow for performant changes in hot code paths.
*/
@PublicEvolving
public class JoinedRowData implements RowData {
private RowKind rowKind = RowKind.INSERT;
private RowData row1;
private RowData row2;
/**
* Creates a new {@link JoinedRowData} of kind {@link RowKind#INSERT}, but without backing rows.
*
*
Note that it must be ensured that the backing rows are set to non-{@code null} values
* before accessing data from this {@link JoinedRowData}.
*/
public JoinedRowData() {}
/**
* Creates a new {@link JoinedRowData} of kind {@link RowKind#INSERT} backed by {@param row1}
* and {@param row2}.
*
*
Note that it must be ensured that the backing rows are set to non-{@code null} values
* before accessing data from this {@link JoinedRowData}.
*/
public JoinedRowData(@Nullable RowData row1, @Nullable RowData row2) {
this(RowKind.INSERT, row1, row2);
}
/**
* Creates a new {@link JoinedRowData} of kind {@param rowKind} backed by {@param row1} and
* {@param row2}.
*
*
Note that it must be ensured that the backing rows are set to non-{@code null} values
* before accessing data from this {@link JoinedRowData}.
*/
public JoinedRowData(RowKind rowKind, @Nullable RowData row1, @Nullable RowData row2) {
this.rowKind = rowKind;
this.row1 = row1;
this.row2 = row2;
}
/**
* Replaces the {@link RowData} backing this {@link JoinedRowData}.
*
*
This method replaces the backing rows in place and does not return a new object. This is
* done for performance reasons.
*/
public JoinedRowData replace(RowData row1, RowData row2) {
this.row1 = row1;
this.row2 = row2;
return this;
}
// ---------------------------------------------------------------------------------------------
@Override
public int getArity() {
return row1.getArity() + row2.getArity();
}
@Override
public RowKind getRowKind() {
return rowKind;
}
@Override
public void setRowKind(RowKind kind) {
this.rowKind = kind;
}
@Override
public boolean isNullAt(int pos) {
if (pos < row1.getArity()) {
return row1.isNullAt(pos);
} else {
return row2.isNullAt(pos - row1.getArity());
}
}
@Override
public boolean getBoolean(int pos) {
if (pos < row1.getArity()) {
return row1.getBoolean(pos);
} else {
return row2.getBoolean(pos - row1.getArity());
}
}
@Override
public byte getByte(int pos) {
if (pos < row1.getArity()) {
return row1.getByte(pos);
} else {
return row2.getByte(pos - row1.getArity());
}
}
@Override
public short getShort(int pos) {
if (pos < row1.getArity()) {
return row1.getShort(pos);
} else {
return row2.getShort(pos - row1.getArity());
}
}
@Override
public int getInt(int pos) {
if (pos < row1.getArity()) {
return row1.getInt(pos);
} else {
return row2.getInt(pos - row1.getArity());
}
}
@Override
public long getLong(int pos) {
if (pos < row1.getArity()) {
return row1.getLong(pos);
} else {
return row2.getLong(pos - row1.getArity());
}
}
@Override
public float getFloat(int pos) {
if (pos < row1.getArity()) {
return row1.getFloat(pos);
} else {
return row2.getFloat(pos - row1.getArity());
}
}
@Override
public double getDouble(int pos) {
if (pos < row1.getArity()) {
return row1.getDouble(pos);
} else {
return row2.getDouble(pos - row1.getArity());
}
}
@Override
public StringData getString(int pos) {
if (pos < row1.getArity()) {
return row1.getString(pos);
} else {
return row2.getString(pos - row1.getArity());
}
}
@Override
public DecimalData getDecimal(int pos, int precision, int scale) {
if (pos < row1.getArity()) {
return row1.getDecimal(pos, precision, scale);
} else {
return row2.getDecimal(pos - row1.getArity(), precision, scale);
}
}
@Override
public TimestampData getTimestamp(int pos, int precision) {
if (pos < row1.getArity()) {
return row1.getTimestamp(pos, precision);
} else {
return row2.getTimestamp(pos - row1.getArity(), precision);
}
}
@Override
public RawValueData getRawValue(int pos) {
if (pos < row1.getArity()) {
return row1.getRawValue(pos);
} else {
return row2.getRawValue(pos - row1.getArity());
}
}
@Override
public byte[] getBinary(int pos) {
if (pos < row1.getArity()) {
return row1.getBinary(pos);
} else {
return row2.getBinary(pos - row1.getArity());
}
}
@Override
public ArrayData getArray(int pos) {
if (pos < row1.getArity()) {
return row1.getArray(pos);
} else {
return row2.getArray(pos - row1.getArity());
}
}
@Override
public MapData getMap(int pos) {
if (pos < row1.getArity()) {
return row1.getMap(pos);
} else {
return row2.getMap(pos - row1.getArity());
}
}
@Override
public RowData getRow(int pos, int numFields) {
if (pos < row1.getArity()) {
return row1.getRow(pos, numFields);
} else {
return row2.getRow(pos - row1.getArity(), numFields);
}
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
JoinedRowData that = (JoinedRowData) o;
return Objects.equals(rowKind, that.rowKind)
&& Objects.equals(this.row1, that.row1)
&& Objects.equals(this.row2, that.row2);
}
@Override
public int hashCode() {
return Objects.hash(rowKind, row1, row2);
}
@Override
public String toString() {
return rowKind.shortString() + "{" + "row1=" + row1 + ", row2=" + row2 + '}';
}
}