simonbence commented on a change in pull request #4123: NIFI-7188: Adding filter capabilities into search & prerequisite refactors URL: https://github.com/apache/nifi/pull/4123#discussion_r390925256
########## File path: nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-web/nifi-web-api/src/main/java/org/apache/nifi/web/search/ComponentMatcherFactory.java ########## @@ -0,0 +1,78 @@ +/* + * 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.nifi.web.search; + +import org.apache.commons.lang3.StringUtils; +import org.apache.nifi.connectable.Connectable; +import org.apache.nifi.connectable.Connection; +import org.apache.nifi.groups.ProcessGroup; +import org.apache.nifi.groups.RemoteProcessGroup; +import org.apache.nifi.parameter.Parameter; +import org.apache.nifi.parameter.ParameterContext; +import org.apache.nifi.web.search.attributematchers.AttributeMatcher; + +import java.util.List; +import java.util.function.Function; +import java.util.stream.Collectors; + +public class ComponentMatcherFactory { + public ComponentMatcher<Connectable> getInstanceForConnectable(final List<AttributeMatcher<Connectable>> attributeMatchers) { + return new AttributeBasedComponentMatcher<>(attributeMatchers, component -> component.getIdentifier(), component -> component.getName()); + } + + public ComponentMatcher<Connection> getInstanceForConnection(final List<AttributeMatcher<Connection>> attributeMatchers) { + return new AttributeBasedComponentMatcher<>(attributeMatchers, component -> component.getIdentifier(), new GetConnectionName()); + } + + public ComponentMatcher<Parameter> getInstanceForParameter(final List<AttributeMatcher<Parameter>> attributeMatchers) { + return new AttributeBasedComponentMatcher<>(attributeMatchers, component -> component.getDescriptor().getName(), component -> component.getDescriptor().getName()); + } + + public ComponentMatcher<ParameterContext> getInstanceForParameterContext(final List<AttributeMatcher<ParameterContext>> attributeMatchers) { + return new AttributeBasedComponentMatcher<>(attributeMatchers, component -> component.getIdentifier(), component -> component.getName()); + } + + public ComponentMatcher<ProcessGroup> getInstanceForProcessGroup(final List<AttributeMatcher<ProcessGroup>> attributeMatchers) { + return new AttributeBasedComponentMatcher<>(attributeMatchers, component -> component.getIdentifier(), component -> component.getName()); + } + + public ComponentMatcher<RemoteProcessGroup> getInstanceForRemoteProcessGroup(final List<AttributeMatcher<RemoteProcessGroup>> attributeMatchers) { + return new AttributeBasedComponentMatcher<>(attributeMatchers, component -> component.getIdentifier(), component -> component.getName()); + } + + private static class GetConnectionName implements Function<Connection, String> { + private static final String DEFAULT_NAME_PREFIX = "From source "; + private static final String SEPARATOR = ", "; + + public String apply(final Connection component) { + String result = null; + + if (StringUtils.isNotBlank(component.getName())) { + result = component.getName(); + } else if (!component.getRelationships().isEmpty()) { + result = component.getRelationships().stream() // Review comment: Valid point. However it looks somewhat harder to read ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services
