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https://issues.apache.org/jira/browse/NIFI-1156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15094257#comment-15094257
]
ASF GitHub Bot commented on NIFI-1156:
--------------------------------------
Github user markap14 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/124#discussion_r49480382
--- Diff:
nifi-nar-bundles/nifi-html-bundle/nifi-html-processors/src/main/java/org/apache/nifi/GetHTMLElement.java
---
@@ -0,0 +1,243 @@
+/*
+ * 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;
+
+import org.apache.commons.lang3.StringUtils;
+import org.apache.nifi.components.PropertyDescriptor;
+import org.apache.nifi.flowfile.FlowFile;
+import org.apache.nifi.processor.ProcessContext;
+import org.apache.nifi.processor.ProcessSession;
+import org.apache.nifi.processor.Relationship;
+import org.apache.nifi.processor.ProcessorInitializationContext;
+import org.apache.nifi.annotation.behavior.WritesAttribute;
+import org.apache.nifi.annotation.behavior.WritesAttributes;
+import org.apache.nifi.annotation.documentation.CapabilityDescription;
+import org.apache.nifi.annotation.documentation.SeeAlso;
+import org.apache.nifi.annotation.documentation.Tags;
+import org.apache.nifi.processor.exception.ProcessException;
+import org.apache.nifi.processor.io.StreamCallback;
+import org.apache.nifi.processor.util.StandardValidators;
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
+import org.jsoup.select.Elements;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+import java.util.HashSet;
+import java.util.Collections;
+
+@Tags({"get", "html", "dom", "css", "element"})
+@CapabilityDescription("Parses HTML input using CSS selector syntax and
creates a new flowfile containing the extracted" +
+ " element content for each matching CSS selector.")
+@SeeAlso({ModifyHTMLElement.class, PutHTMLElement.class})
+@WritesAttributes({@WritesAttribute(attribute="HTMLElement",
description="Flowfile attribute where the element result" +
+ " parsed from the HTML using the CSS selector syntax are placed if
the destination is a flowfile attribute.")})
+public class GetHTMLElement
+ extends AbstractHTMLProcessor {
+
+ public static final String HTML_ELEMENT_ATTRIBUTE_NAME = "HTMLElement";
+ public static final String DESTINATION_ATTRIBUTE =
"flowfile-attribute";
+ public static final String DESTINATION_CONTENT = "flowfile-content";
+
+ public static final PropertyDescriptor PREPEND_ELEMENT_VALUE = new
PropertyDescriptor
+ .Builder().name("Prepend Element value")
--- End diff --
Recommend we keep with Title Case: Prepend Element Value
> HTML Parsing Processors Bundle
> ------------------------------
>
> Key: NIFI-1156
> URL: https://issues.apache.org/jira/browse/NIFI-1156
> Project: Apache NiFi
> Issue Type: New Feature
> Components: Core Framework
> Reporter: Jeremy Dyer
> Priority: Minor
>
> NiFi provides the ability to ingest HTML but lacks the convenience to easily
> interact with that HTML once it has entered the flow. There should be a HTML
> Processing Bundle that provides mechanisms for manipulating and interacting
> with HTML data once it has entered the flow. Jsoup http://jsoup.org/ seems
> like a logical tool to use since it is mature and has a MIT license which
> would allow it to be incorporated into NiFi.
> “GetHTMLElement” should use the CSS selector-syntax
> (http://www.w3schools.com/cssref/css_selectors.asp) built into Jsoup to
> extract 0-N HTML elements from the original HTML input. This processor should
> support a delimited string of selectors allowing the user to build compound
> HTML element output. Each HTML element (or compound element result) extracted
> will create a new Flowfile where the element will be in either the Flowfile
> content or an attribute depending on the user configuration.
> “ModifyHTMLElement” should provide the ability to modify the original input
> HTML and overwrite any existing element values. The HTML element that will be
> modified can be selected by using the CSS selector-syntax
> “PutHTMLElement” should provide the ability to put a new HTML element
> anywhere in the original input HTML using CSS selector-syntax to indicate the
> position that the new HTML element should be placed.
> There seems to be a potential for adding more processors but this seems like
> a good start. Since there is a dependency on Jsoup and a potential for more
> processors to come I think it makes sense to add this logic as its own nar
> bundle but I could be wrong.
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