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    <groupId>7c84501d-d10c-407c-b9f3-1d80e38fe36a</groupId>
    <name>Working with Expression Languages</name>
    <snippet>
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                        <x>1142.951259290122</x>
                        <y>514.6532486230138</y>
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                    <height>35.459306716918945</height>
                    <label>notice the use of various tests to evaluate that logic is working as I started to make things more complicated</label>
                    <style>
                        <entry>
                            <key>font-size</key>
                            <value>12px</value>
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                    <label>creating the combined url here as the attribute and string combination was not accepting in the ifElse argument</label>
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                    <label>leaving attributeC empty for testing logic</label>
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                    <validationErrors>'Port 'output'' is invalid because Output connection for port 'output' is not defined.</validationErrors>
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                        <comments></comments>
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<key>File Size</key>
<value>
    <name>File Size</name>
</value>
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<key>Batch Size</key>
<value>
    <name>Batch Size</name>
</value>
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                            <entry>
<key>Data Format</key>
<value>
    <name>Data Format</name>
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<key>Unique FlowFiles</key>
<value>
    <name>Unique FlowFiles</name>
</value>
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<key>generate-ff-custom-text</key>
<value>
    <name>generate-ff-custom-text</name>
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<key>character-set</key>
<value>
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                        <penaltyDuration>30 sec</penaltyDuration>
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<key>File Size</key>
<value>0B</value>
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<key>Batch Size</key>
<value>1</value>
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                            <entry>
<key>Data Format</key>
<value>Text</value>
                            </entry>
                            <entry>
<key>Unique FlowFiles</key>
<value>false</value>
                            </entry>
                            <entry>
<key>generate-ff-custom-text</key>
                            </entry>
                            <entry>
<key>character-set</key>
<value>UTF-8</value>
                            </entry>
                        </properties>
                        <runDurationMillis>0</runDurationMillis>
                        <schedulingPeriod>15 sec</schedulingPeriod>
                        <schedulingStrategy>TIMER_DRIVEN</schedulingStrategy>
                        <yieldDuration>1 sec</yieldDuration>
                    </config>
                    <executionNodeRestricted>false</executionNodeRestricted>
                    <name>GenerateFlowFile</name>
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                        <autoTerminate>false</autoTerminate>
                        <name>success</name>
                    </relationships>
                    <state>STOPPED</state>
                    <style/>
                    <type>org.apache.nifi.processors.standard.GenerateFlowFile</type>
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                <processors>
                    <id>319e8fb0-f5b2-3834-0000-000000000000</id>
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                        <y>482.8363572000644</y>
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                    <bundle>
                        <artifact>nifi-update-attribute-nar</artifact>
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                        <version>1.9.0.3.4.1.1-4</version>
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                    <config>
                        <bulletinLevel>WARN</bulletinLevel>
                        <comments></comments>
                        <concurrentlySchedulableTaskCount>1</concurrentlySchedulableTaskCount>
                        <descriptors>
                            <entry>
<key>Delete Attributes Expression</key>
<value>
    <name>Delete Attributes Expression</name>
</value>
                            </entry>
                            <entry>
<key>Store State</key>
<value>
    <name>Store State</name>
</value>
                            </entry>
                            <entry>
<key>Stateful Variables Initial Value</key>
<value>
    <name>Stateful Variables Initial Value</name>
</value>
                            </entry>
                            <entry>
<key>canonical-value-lookup-cache-size</key>
<value>
    <name>canonical-value-lookup-cache-size</name>
</value>
                            </entry>
                            <entry>
<key>url_A</key>
<value>
    <name>url_A</name>
</value>
                            </entry>
                            <entry>
<key>url_B</key>
<value>
    <name>url_B</name>
</value>
                            </entry>
                            <entry>
<key>url_empty</key>
<value>
    <name>url_empty</name>
</value>
                            </entry>
                            <entry>
<key>url_empty_combined</key>
<value>
    <name>url_empty_combined</name>
</value>
                            </entry>
                            <entry>
<key>url1</key>
<value>
    <name>url1</name>
</value>
                            </entry>
                            <entry>
<key>url2</key>
<value>
    <name>url2</name>
</value>
                            </entry>
                            <entry>
<key>url3</key>
<value>
    <name>url3</name>
</value>
                            </entry>
                        </descriptors>
                        <executionNode>ALL</executionNode>
                        <lossTolerant>false</lossTolerant>
                        <penaltyDuration>30 sec</penaltyDuration>
                        <properties>
                            <entry>
<key>Delete Attributes Expression</key>
                            </entry>
                            <entry>
<key>Store State</key>
<value>Do not store state</value>
                            </entry>
                            <entry>
<key>Stateful Variables Initial Value</key>
                            </entry>
                            <entry>
<key>canonical-value-lookup-cache-size</key>
<value>100</value>
                            </entry>
                            <entry>
<key>url_A</key>
<value>${attributeA:isEmpty():ifElse(${attributeB}, ${attributeA})}</value>
                            </entry>
                            <entry>
<key>url_B</key>
<value>${attributeC:isEmpty():ifElse(${attributeB}, ${attributeA})}</value>
                            </entry>
                            <entry>
<key>url_empty</key>
<value>${attributeC:isEmpty():ifElse(${attributeB}, ${attributeA})}</value>
                            </entry>
                            <entry>
<key>url_empty_combined</key>
<value>${attributeC:isEmpty():ifElse(${combinedAttribute}, ${attributeA})}</value>
                            </entry>
                            <entry>
<key>url1</key>
<value>${attributeA:isEmpty():ifElse('true', 'false')}</value>
                            </entry>
                            <entry>
<key>url2</key>
<value>${attributeC:isEmpty():ifElse('true', 'false')}</value>
                            </entry>
                            <entry>
<key>url3</key>
<value>${attributeA:isEmpty():ifElse(${attributeB}, ${attributeA})}</value>
                            </entry>
                        </properties>
                        <runDurationMillis>0</runDurationMillis>
                        <schedulingPeriod>0 sec</schedulingPeriod>
                        <schedulingStrategy>TIMER_DRIVEN</schedulingStrategy>
                        <yieldDuration>1 sec</yieldDuration>
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                    <executionNodeRestricted>false</executionNodeRestricted>
                    <name>UpdateAttribute</name>
                    <relationships>
                        <autoTerminate>false</autoTerminate>
                        <name>success</name>
                    </relationships>
                    <state>RUNNING</state>
                    <style/>
                    <type>org.apache.nifi.processors.attributes.UpdateAttribute</type>
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                <processors>
                    <id>34e02ed6-49fc-3e3b-0000-000000000000</id>
                    <parentGroupId>c63a5a13-5090-3f84-0000-000000000000</parentGroupId>
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                        <y>278.07107254011663</y>
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                        <group>org.apache.nifi</group>
                        <version>1.9.0.3.4.1.1-4</version>
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                        <bulletinLevel>WARN</bulletinLevel>
                        <comments></comments>
                        <concurrentlySchedulableTaskCount>1</concurrentlySchedulableTaskCount>
                        <descriptors>
                            <entry>
<key>Delete Attributes Expression</key>
<value>
    <name>Delete Attributes Expression</name>
</value>
                            </entry>
                            <entry>
<key>Store State</key>
<value>
    <name>Store State</name>
</value>
                            </entry>
                            <entry>
<key>Stateful Variables Initial Value</key>
<value>
    <name>Stateful Variables Initial Value</name>
</value>
                            </entry>
                            <entry>
<key>canonical-value-lookup-cache-size</key>
<value>
    <name>canonical-value-lookup-cache-size</name>
</value>
                            </entry>
                            <entry>
<key>combinedAttribute</key>
<value>
    <name>combinedAttribute</name>
</value>
                            </entry>
                        </descriptors>
                        <executionNode>ALL</executionNode>
                        <lossTolerant>false</lossTolerant>
                        <penaltyDuration>30 sec</penaltyDuration>
                        <properties>
                            <entry>
<key>Delete Attributes Expression</key>
                            </entry>
                            <entry>
<key>Store State</key>
<value>Do not store state</value>
                            </entry>
                            <entry>
<key>Stateful Variables Initial Value</key>
                            </entry>
                            <entry>
<key>canonical-value-lookup-cache-size</key>
<value>100</value>
                            </entry>
                            <entry>
<key>combinedAttribute</key>
<value>${attributeA}/tests/${attributeB}</value>
                            </entry>
                        </properties>
                        <runDurationMillis>0</runDurationMillis>
                        <schedulingPeriod>0 sec</schedulingPeriod>
                        <schedulingStrategy>TIMER_DRIVEN</schedulingStrategy>
                        <yieldDuration>1 sec</yieldDuration>
                    </config>
                    <executionNodeRestricted>false</executionNodeRestricted>
                    <name>UpdateAttribute</name>
                    <relationships>
                        <autoTerminate>false</autoTerminate>
                        <name>success</name>
                    </relationships>
                    <state>RUNNING</state>
                    <style/>
                    <type>org.apache.nifi.processors.attributes.UpdateAttribute</type>
                </processors>
                <processors>
                    <id>4ecf5970-ebeb-33b0-0000-000000000000</id>
                    <parentGroupId>c63a5a13-5090-3f84-0000-000000000000</parentGroupId>
                    <position>
                        <x>748.8755776744383</x>
                        <y>60.125618064322225</y>
                    </position>
                    <bundle>
                        <artifact>nifi-update-attribute-nar</artifact>
                        <group>org.apache.nifi</group>
                        <version>1.9.0.3.4.1.1-4</version>
                    </bundle>
                    <config>
                        <bulletinLevel>WARN</bulletinLevel>
                        <comments></comments>
                        <concurrentlySchedulableTaskCount>1</concurrentlySchedulableTaskCount>
                        <descriptors>
                            <entry>
<key>Delete Attributes Expression</key>
<value>
    <name>Delete Attributes Expression</name>
</value>
                            </entry>
                            <entry>
<key>Store State</key>
<value>
    <name>Store State</name>
</value>
                            </entry>
                            <entry>
<key>Stateful Variables Initial Value</key>
<value>
    <name>Stateful Variables Initial Value</name>
</value>
                            </entry>
                            <entry>
<key>canonical-value-lookup-cache-size</key>
<value>
    <name>canonical-value-lookup-cache-size</name>
</value>
                            </entry>
                            <entry>
<key>attributeA</key>
<value>
    <name>attributeA</name>
</value>
                            </entry>
                            <entry>
<key>attributeB</key>
<value>
    <name>attributeB</name>
</value>
                            </entry>
                            <entry>
<key>attributeD</key>
<value>
    <name>attributeD</name>
</value>
                            </entry>
                            <entry>
<key>combinedAttribute</key>
<value>
    <name>combinedAttribute</name>
</value>
                            </entry>
                        </descriptors>
                        <executionNode>ALL</executionNode>
                        <lossTolerant>false</lossTolerant>
                        <penaltyDuration>30 sec</penaltyDuration>
                        <properties>
                            <entry>
<key>Delete Attributes Expression</key>
                            </entry>
                            <entry>
<key>Store State</key>
<value>Do not store state</value>
                            </entry>
                            <entry>
<key>Stateful Variables Initial Value</key>
                            </entry>
                            <entry>
<key>canonical-value-lookup-cache-size</key>
<value>100</value>
                            </entry>
                            <entry>
<key>attributeA</key>
<value>testA</value>
                            </entry>
                            <entry>
<key>attributeB</key>
<value>testB</value>
                            </entry>
                            <entry>
<key>attributeD</key>
<value>testD</value>
                            </entry>
                            <entry>
<key>combinedAttribute</key>
<value>${attributeA}/tests/${attributeB}</value>
                            </entry>
                        </properties>
                        <runDurationMillis>0</runDurationMillis>
                        <schedulingPeriod>0 sec</schedulingPeriod>
                        <schedulingStrategy>TIMER_DRIVEN</schedulingStrategy>
                        <yieldDuration>1 sec</yieldDuration>
                    </config>
                    <executionNodeRestricted>false</executionNodeRestricted>
                    <name>UpdateAttribute</name>
                    <relationships>
                        <autoTerminate>false</autoTerminate>
                        <name>success</name>
                    </relationships>
                    <state>RUNNING</state>
                    <style/>
                    <type>org.apache.nifi.processors.attributes.UpdateAttribute</type>
                </processors>
            </contents>
            <name>Working With Expression Language</name>
            <variables/>
        </processGroups>
    </snippet>
    <timestamp>06/01/2020 18:45:46 UTC</timestamp>
</template>