Nitrite/Java: Possibiltity to index a field with both text and non-unique/unique filter

[magicDGS]

When I was trying to add an index to a field that is text-based, I found weird that a index cannot be added to the same field twice. The actual index applied and behavior depends on the combinations of indexes applied:

• If IndexType.FULL_TEXT and IndexType.NON_UNIQUE, an eq filter fails with: org.dizitart.no2.exceptions.FilterException: Text index only supports a single TextFilter
• If IndexType.FULL_TEXT and IndexType.UNIQUE, a text filter does not fail, but it is not able to find any result.

An example class that can be used to show the behavior:

package io.github.magicdgs.nitrite_test;

import org.dizitart.no2.Nitrite;
import org.dizitart.no2.common.mapper.JacksonMapperModule;
import org.dizitart.no2.filters.FluentFilter;
import org.dizitart.no2.index.IndexType;
import org.dizitart.no2.repository.ObjectRepository;
import org.dizitart.no2.repository.annotations.Index;
import org.dizitart.no2.repository.annotations.Indices;
import org.junit.jupiter.api.Test;

import java.util.function.Function;

public class NitritePlaygroundTests {

	@Test
	public void testUnique() {
		try (final Nitrite nitrite = Nitrite.builder()
				.loadModule(new JacksonMapperModule())
				.openOrCreate()) {
			final ObjectRepository<EntityUniqueFullText> repository = nitrite.getRepository(EntityUniqueFullText.class);
			testRepository(repository, EntityUniqueFullText::new);
		}
	}

	@Test
	public void testNoUnique() {
		try (final Nitrite nitrite = Nitrite.builder()
				.loadModule(new JacksonMapperModule())
				.openOrCreate()) {
			final ObjectRepository<EntityNoUniqueFullText> repository = nitrite.getRepository(EntityNoUniqueFullText.class);
			testRepository(repository, EntityNoUniqueFullText::new);
		}
	}

	private <T> void testRepository(ObjectRepository<T> repository,
									Function<String, T> constructorFunction) {
		final String prefix = "test";
		final String entityValue1 =  prefix + " 1";
		final String entityValue2 = prefix + " 2";

		repository.insert(constructorFunction.apply(entityValue1));
		repository.insert(constructorFunction.apply(entityValue2));

		try {
			System.out.println("Equals search:");
			repository.find(FluentFilter.where("value").eq(entityValue1)).forEach(System.out::println);
			repository.find(FluentFilter.where("value").eq(entityValue2)).forEach(System.out::println);
		} catch (Exception e) {
			e.printStackTrace();
		}
		try {
			System.out.println("\nText search:");
			repository.find(FluentFilter.where("value").text(prefix)).forEach(System.out::println);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	@Indices({
		@Index(fields = "value", type = IndexType.FULL_TEXT),
		@Index(fields = "value", type = IndexType.UNIQUE)
	})
	public record EntityUniqueFullText(String value) {

	}

	@Indices({
		@Index(fields = "value", type = IndexType.FULL_TEXT),
		@Index(fields = "value", type = IndexType.NON_UNIQUE)
	})
	public record EntityNoUniqueFullText(String value) {

	}

}

Where if run, testNoUnique produces:

18:15:48.096 [main] WARN nitrite -- No persistent storage module found, creating an in-memory database
Equals search:
org.dizitart.no2.exceptions.FilterException: Text index only supports a single TextFilter
	at org.dizitart.no2.index.TextIndex.findNitriteIds(TextIndex.java:155)
	at org.dizitart.no2.index.NitriteTextIndexer.findByFilter(NitriteTextIndexer.java:95)
	at org.dizitart.no2.collection.operation.ReadOperations.findSuitableStream(ReadOperations.java:146)
	at org.dizitart.no2.collection.operation.ReadOperations.createCursor(ReadOperations.java:110)
	at org.dizitart.no2.collection.operation.ReadOperations.find(ReadOperations.java:70)
	at org.dizitart.no2.collection.operation.CollectionOperations.find(CollectionOperations.java:114)
	at org.dizitart.no2.collection.DefaultNitriteCollection.find(DefaultNitriteCollection.java:175)
	at org.dizitart.no2.repository.RepositoryOperations.find(RepositoryOperations.java:193)
	at org.dizitart.no2.repository.DefaultObjectRepository.find(DefaultObjectRepository.java:160)
	at org.dizitart.no2.repository.ObjectRepository.find(ObjectRepository.java:277)
	at io.github.magicdgs.nitrite_test.NitritePlaygroundTests.testRepository(NitritePlaygroundTests.java:47)
	at io.github.magicdgs.nitrite_test.NitritePlaygroundTests.testNoUnique(NitritePlaygroundTests.java:32)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:728)
	at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
	at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:156)
	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:147)
	at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:86)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(InterceptingExecutableInvoker.java:103)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.lambda$invoke$0(InterceptingExecutableInvoker.java:93)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:92)
	at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:86)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:218)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:214)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:139)
	at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:69)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
	at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
	at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
	at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
	at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
	at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:198)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:169)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:93)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:58)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:141)
	at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:57)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:103)
	at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:85)
	at org.junit.platform.launcher.core.DelegatingLauncher.execute(DelegatingLauncher.java:47)
	at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:63)
	at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
	at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:232)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:55)

Text search:
EntityNoUniqueFullText[value=test 1]
EntityNoUniqueFullText[value=test 2]
18:15:48.423 [main] INFO nitrite -- Nitrite database has been closed successfully.

And testUnique:

18:15:48.431 [main] WARN nitrite -- No persistent storage module found, creating an in-memory database
Equals search:
EntityUniqueFullText[value=test 1]
EntityUniqueFullText[value=test 2]

Text search:
18:15:48.440 [main] INFO nitrite -- Nitrite database has been closed successfully.

Is there a way to provide a text and another index to a single field?

[anidotnet]

This could be a bug. The behavior should be same for any combination of index. Could you please raise an issue in the repository?

[magicDGS]

I just opened nitrite/nitrite-java#916 using the github feature to mention on a new issue. Hope that it helps!