flink-core/src/main/java/org/apache/flink/types/JavaToValueConverter.java

/*
 * 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.types;

import org.apache.flink.annotation.PublicEvolving;

@PublicEvolving
public class JavaToValueConverter {

    public static Value convertBoxedJavaType(Object boxed) {
        if (boxed == null) {
            return null;
        }

        final Class<?> clazz = boxed.getClass();

        if (clazz == String.class) {
            return new StringValue((String) boxed);
        } else if (clazz == Integer.class) {
            return new IntValue((Integer) boxed);
        } else if (clazz == Long.class) {
            return new LongValue((Long) boxed);
        } else if (clazz == Double.class) {
            return new DoubleValue((Double) boxed);
        } else if (clazz == Float.class) {
            return new FloatValue((Float) boxed);
        } else if (clazz == Boolean.class) {
            return new BooleanValue((Boolean) boxed);
        } else if (clazz == Byte.class) {
            return new ByteValue((Byte) boxed);
        } else if (clazz == Short.class) {
            return new ShortValue((Short) boxed);
        } else if (clazz == Character.class) {
            return new CharValue((Character) boxed);
        } else {
            throw new IllegalArgumentException("Object is no primitive Java type.");
        }
    }

    public static Object convertValueType(Value value) {
        if (value == null) {
            return null;
        }

        if (value instanceof StringValue) {
            return ((StringValue) value).getValue();
        } else if (value instanceof IntValue) {
            return ((IntValue) value).getValue();
        } else if (value instanceof LongValue) {
            return ((LongValue) value).getValue();
        } else if (value instanceof DoubleValue) {
            return ((DoubleValue) value).getValue();
        } else if (value instanceof FloatValue) {
            return ((FloatValue) value).getValue();
        } else if (value instanceof BooleanValue) {
            return ((BooleanValue) value).getValue();
        } else if (value instanceof ByteValue) {
            return ((ByteValue) value).getValue();
        } else if (value instanceof ShortValue) {
            return ((ShortValue) value).getValue();
        } else if (value instanceof CharValue) {
            return ((CharValue) value).getValue();
        } else {
            throw new IllegalArgumentException("Object is no primitive Java type.");
        }
    }
}