modules/core/src/main/java/org/apache/ignite/internal/processors/platform/PlatformAbstractPredicate.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.ignite.internal.processors.platform;

import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;

/**
 * Base interop predicate. Delegates apply to native platform.
 */
public abstract class PlatformAbstractPredicate implements Externalizable {
    /** .Net binary predicate */
    protected Object pred;

    /** Pointer to deployed predicate. */
    protected transient long ptr;

    /** Interop processor. */
    protected transient PlatformContext ctx;

    /**
     * {@link java.io.Externalizable} support.
     */
    public PlatformAbstractPredicate() {
        // No-op.
    }

    /**
     * Constructor.
     *
     * @param pred .Net binary predicate.
     * @param ptr Pointer to predicate in the native platform.
     * @param ctx Kernal context.
     */
    protected PlatformAbstractPredicate(Object pred, long ptr, PlatformContext ctx) {
        this.pred = pred;
        this.ptr = ptr;
        this.ctx = ctx;
    }

    /** {@inheritDoc} */
    @Override public void writeExternal(ObjectOutput out) throws IOException {
        out.writeObject(pred);
    }

    /** {@inheritDoc} */
    @Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
        pred = in.readObject();
    }
}