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TEIID-4932 adding a UDF metadata factory
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engine/src/main/java/org/teiid/query/metadata/UDFMetadataRepository.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| /* | ||
| * Copyright Red Hat, Inc. and/or its affiliates | ||
| * and other contributors as indicated by the @author tags and | ||
| * the COPYRIGHT.txt file distributed with this work. | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
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|
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| package org.teiid.query.metadata; | ||
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| import java.lang.reflect.Method; | ||
| import java.lang.reflect.Modifier; | ||
| import java.util.Arrays; | ||
| import java.util.HashSet; | ||
| import java.util.Set; | ||
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| import org.teiid.CommandContext; | ||
| import org.teiid.UserDefinedAggregate; | ||
| import org.teiid.metadata.MetadataFactory; | ||
| import org.teiid.metadata.MetadataRepository; | ||
| import org.teiid.query.function.TeiidFunction; | ||
| import org.teiid.translator.ExecutionFactory; | ||
| import org.teiid.translator.TranslatorException; | ||
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| /** | ||
| * Simple metadata loader for functions | ||
| * | ||
| * TODO: make the {@link TeiidFunction} annotation public | ||
| */ | ||
| public class UDFMetadataRepository extends MetadataRepository { | ||
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| @Override | ||
| public void loadMetadata(MetadataFactory factory, | ||
| ExecutionFactory executionFactory, Object connectionFactory, | ||
| String text) throws TranslatorException { | ||
| String className = factory.getModelProperties().getProperty("importer.schemaName"); //$NON-NLS-1$ | ||
| String methodNames = factory.getModelProperties().getProperty("importer.methodNames"); //$NON-NLS-1$ | ||
| ClassLoader classLoader = factory.getVDBClassLoader(); | ||
| Set<String> allowed = null; | ||
| if (methodNames != null) { | ||
| allowed = new HashSet<>(Arrays.asList(methodNames.split(","))); //$NON-NLS-1$ | ||
| } | ||
| try { | ||
| Class<?> clazz = classLoader.loadClass(className); | ||
|
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| if (UserDefinedAggregate.class.isAssignableFrom(clazz)) { | ||
| factory.addFunction(clazz.getSimpleName(), clazz.getMethod("getResult", new Class<?>[] {CommandContext.class})); | ||
| } else { | ||
| Method[] methods = clazz.getMethods(); | ||
| for (Method m : methods) { | ||
| if (!Modifier.isStatic(m.getModifiers())) { | ||
| continue; | ||
| } | ||
| if (m.getReturnType() == Void.TYPE) { | ||
| continue; | ||
| } | ||
| if (allowed != null && !allowed.contains(m.getName())) { | ||
| continue; | ||
| } | ||
| factory.addFunction(m.getName(), m); | ||
| } | ||
| } | ||
| } catch (ClassNotFoundException | NoSuchMethodException | SecurityException e) { | ||
| throw new TranslatorException(e); | ||
| } | ||
| } | ||
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|
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| package org.teiid.runtime; | ||
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| public class Funcs { | ||
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| public static boolean something(long val) { | ||
| return val > System.currentTimeMillis(); | ||
| } | ||
|
|
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| } |
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