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From jvwing <...@git.apache.org>
Subject [GitHub] nifi pull request #929: NIFI-2613 - Apache POI processor to convert Excel do...
Date Thu, 16 Feb 2017 00:15:52 GMT
Github user jvwing commented on a diff in the pull request:

    https://github.com/apache/nifi/pull/929#discussion_r101393181
  
    --- Diff: nifi-nar-bundles/nifi-poi-bundle/nifi-poi-processors/src/main/java/org/apache/nifi/processors/poi/ConvertExcelToCSVProcessor.java
---
    @@ -0,0 +1,393 @@
    +/*
    + * 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.processors.poi;
    +
    +import java.io.IOException;
    +import java.io.InputStream;
    +import java.io.OutputStream;
    +import java.util.ArrayList;
    +import java.util.Collections;
    +import java.util.HashSet;
    +import java.util.Iterator;
    +import java.util.List;
    +import java.util.Set;
    +import java.util.concurrent.atomic.AtomicReference;
    +
    +import org.apache.commons.io.FilenameUtils;
    +import org.apache.commons.lang3.StringUtils;
    +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.Tags;
    +import org.apache.nifi.components.PropertyDescriptor;
    +import org.apache.nifi.flowfile.FlowFile;
    +import org.apache.nifi.flowfile.attributes.CoreAttributes;
    +import org.apache.nifi.processor.AbstractProcessor;
    +import org.apache.nifi.processor.ProcessContext;
    +import org.apache.nifi.processor.ProcessSession;
    +import org.apache.nifi.processor.ProcessorInitializationContext;
    +import org.apache.nifi.processor.Relationship;
    +import org.apache.nifi.processor.exception.ProcessException;
    +import org.apache.nifi.processor.io.StreamCallback;
    +import org.apache.nifi.processor.util.StandardValidators;
    +import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
    +import org.apache.poi.openxml4j.exceptions.OpenXML4JException;
    +import org.apache.poi.openxml4j.opc.OPCPackage;
    +import org.apache.poi.xssf.eventusermodel.XSSFReader;
    +import org.apache.poi.xssf.model.SharedStringsTable;
    +import org.apache.poi.xssf.usermodel.XSSFRichTextString;
    +import org.xml.sax.Attributes;
    +import org.xml.sax.ContentHandler;
    +import org.xml.sax.InputSource;
    +import org.xml.sax.SAXException;
    +import org.xml.sax.XMLReader;
    +import org.xml.sax.helpers.DefaultHandler;
    +import org.xml.sax.helpers.XMLReaderFactory;
    +
    +
    +@Tags({"excel", "csv", "poi"})
    +@CapabilityDescription("Consumes a Microsoft Excel document and converts each worksheet
to csv. Each sheet from the incoming Excel " +
    +        "document will generate a new Flowfile that will be output from this processor.
Each output Flowfile's contents will be formatted as a csv file " +
    +        "where the each row from the excel sheet is output as a newline in the csv file.")
    +@WritesAttributes({@WritesAttribute(attribute="sheetname", description="The name of the
Excel sheet that this particular row of data came from in the Excel document"),
    +        @WritesAttribute(attribute="numrows", description="The number of rows in this
Excel Sheet"),
    --- End diff --
    
    Can we clarify if this is the number of rows in the input spreadsheet, or output rows
in the flowfile?


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