ScalarUdfExecutorFactory.java

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package org.apache.doris.udf;

import org.apache.doris.jni.spi.UdfExecutorFactory;

/**
 * Builds {@link UdfExecutor}, which runs both scalar functions and table functions. BE reaches it
 * as {@code (java-udf, scalar)} from the expression path and from the table-function path alike.
 */
public class ScalarUdfExecutorFactory implements UdfExecutorFactory {

    public static final String NAME = "scalar";

    @Override
    public String getName() {
        return NAME;
    }

    @Override
    public Object create(byte[] thriftParams) throws Exception {
        return new UdfExecutor(thriftParams);
    }

    /**
     * Both factories in this plugin share one cache of compiled functions, so this is the same
     * work {@link AggregateUdfExecutorFactory} does; BE broadcasts DROP FUNCTION to every factory
     * and dropping a signature that is not cached does nothing.
     */
    @Override
    public void invalidate(String functionSignature) {
        UdfClassCacheRegistry.invalidate(functionSignature);
    }
}