flink-library-siddhi/src/test/java/org/apache/flink/streaming/siddhi/schema/SiddhiExecutionPlanSchemaTest.java

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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
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 * http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.flink.streaming.siddhi.schema;

import org.apache.flink.api.common.typeinfo.TypeInformation;
import org.apache.flink.api.java.typeutils.PojoTypeInfo;
import org.apache.flink.api.java.typeutils.TypeExtractor;
import org.apache.flink.streaming.siddhi.source.Event;
import org.junit.Test;
import org.wso2.siddhi.query.api.definition.Attribute;
import org.wso2.siddhi.query.api.definition.StreamDefinition;

import static org.junit.Assert.*;

public class SiddhiExecutionPlanSchemaTest {
    @Test
    public void testStreamSchemaWithPojo() {
        TypeInformation<Event> typeInfo = TypeExtractor.createTypeInfo(Event.class);
        assertTrue("Type information should be PojoTypeInfo", typeInfo instanceof PojoTypeInfo);

        SiddhiStreamSchema<Event> schema = new SiddhiStreamSchema<>(typeInfo, "id", "timestamp", "name", "price");
        assertEquals(4, schema.getFieldIndexes().length);

        StreamDefinition streamDefinition = schema.getStreamDefinition("test_stream");
        assertArrayEquals(new String[]{"id", "timestamp", "name", "price"}, streamDefinition.getAttributeNameArray());

        assertEquals(Attribute.Type.INT, streamDefinition.getAttributeType("id"));
        assertEquals(Attribute.Type.LONG, streamDefinition.getAttributeType("timestamp"));
        assertEquals(Attribute.Type.STRING, streamDefinition.getAttributeType("name"));
        assertEquals(Attribute.Type.DOUBLE, streamDefinition.getAttributeType("price"));

        assertEquals("define stream test_stream (id int,timestamp long,name string,price double);", schema.getStreamDefinitionExpression("test_stream"));
    }
}