# Is there a way to read tags inside a component?

**URL:** <https://forum.inductiveautomation.com/t/is-there-a-way-to-read-tags-inside-a-component/10392>\
**Category:** Module Development\
**Created:** [August 25, 2015, 5:31pm UTC](https://forum.inductiveautomation.com/t/is-there-a-way-to-read-tags-inside-a-component/10392 "2015-08-25T17:31:38Z")\
**Posts on this page:** 1\
**Showing post:** 7

<div class="post-metadata">

**Author:** ![salbrechtsen](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/salbrechtsen/32/18660_2.png) [@salbrechtsen](https://forum.inductiveautomation.com/u/salbrechtsen)\
**Post date:** [April 9, 2018, 7:18pm UTC](https://forum.inductiveautomation.com/t/is-there-a-way-to-read-tags-inside-a-component/10392/7 "2018-04-09T19:18:47Z")

</div>

```auto
Exception in thread "AWT-EventQueue-2" java.lang.RuntimeException: com.inductiveautomation.ignition.client.gateway_interface.GatewayException: Unable to locate function 'SQLTags.read'
	at com.inductiveautomation.ignition.client.sqltags.impl.db.DatasourceTagManager.read(DatasourceTagManager.java:436)
	at com.inductiveautomation.ignition.client.sqltags.impl.ClientTagManagerImpl.read(ClientTagManagerImpl.java:192)
	at com.inductiveautomation.ignition.examples.ce.components.StandardTank.drawTag(StandardTank.java:103)
	at com.inductiveautomation.ignition.examples.ce.components.StandardTank.paintComponent(StandardTank.java:91)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at com.inductiveautomation.vision.api.client.components.model.AbstractVisionPanel.paintChildren(AbstractVisionPanel.java:279)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at com.inductiveautomation.vision.api.client.components.model.AbstractVisionPanel.paintChildren(AbstractVisionPanel.java:279)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at com.inductiveautomation.vision.api.client.components.model.AbstractVisionPanel.paintChildren(AbstractVisionPanel.java:279)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at com.inductiveautomation.vision.api.client.components.model.AbstractVisionPanel.paintChildren(AbstractVisionPanel.java:279)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at com.inductiveautomation.vision.api.client.components.model.AbstractVisionPanel.paintChildren(AbstractVisionPanel.java:279)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at com.inductiveautomation.vision.api.client.components.model.AbstractVisionPanel.paintChildren(AbstractVisionPanel.java:279)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JLayeredPane.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JLayeredPane.paint(Unknown Source)
	at javax.swing.JComponent.paintToOffscreen(Unknown Source)
	at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
	at javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
	at javax.swing.RepaintManager.paint(Unknown Source)
	at javax.swing.JComponent._paintImmediately(Unknown Source)
	at javax.swing.JComponent.paintImmediately(Unknown Source)
	at javax.swing.RepaintManager$4.run(Unknown Source)
	at javax.swing.RepaintManager$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
	at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
	at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
	at javax.swing.RepaintManager.access$1200(Unknown Source)
	at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
	at java.awt.event.InvocationEvent.dispatch(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$500(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: com.inductiveautomation.ignition.client.gateway_interface.GatewayException: Unable to locate function 'SQLTags.read'
	at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.newGatewayException(GatewayInterface.java:341)
	at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.sendMessage(GatewayInterface.java:315)
	at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.sendMessage(GatewayInterface.java:268)
	at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.invoke(GatewayInterface.java:894)
	at com.inductiveautomation.ignition.client.sqltags.impl.db.DatasourceTagManager.read(DatasourceTagManager.java:434)
	... 61 more
Exception in thread "AWT-EventQueue-2" java.lang.RuntimeException: com.inductiveautomation.ignition.client.gateway_interface.GatewayException: Unable to locate function 'SQLTags.read'
	at com.inductiveautomation.ignition.client.sqltags.impl.db.DatasourceTagManager.read(DatasourceTagManager.java:436)
	at com.inductiveautomation.ignition.client.sqltags.impl.ClientTagManagerImpl.read(ClientTagManagerImpl.java:192)
	at com.inductiveautomation.ignition.examples.ce.components.StandardTank.drawTag(StandardTank.java:103)
	at com.inductiveautomation.ignition.examples.ce.components.StandardTank.paintComponent(StandardTank.java:91)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at com.inductiveautomation.vision.api.client.components.model.AbstractVisionPanel.paintChildren(AbstractVisionPanel.java:279)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at com.inductiveautomation.vision.api.client.components.model.AbstractVisionPanel.paintChildren(AbstractVisionPanel.java:279)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at com.inductiveautomation.vision.api.client.components.model.AbstractVisionPanel.paintChildren(AbstractVisionPanel.java:279)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at com.inductiveautomation.vision.api.client.components.model.AbstractVisionPanel.paintChildren(AbstractVisionPanel.java:279)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at com.inductiveautomation.vision.api.client.components.model.AbstractVisionPanel.paintChildren(AbstractVisionPanel.java:279)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintChildren(Unknown Source)
	at com.inductiveautomation.vision.api.client.components.model.AbstractVisionPanel.paintChildren(AbstractVisionPanel.java:279)
	at javax.swing.JComponent.paint(Unknown Source)
	at javax.swing.JComponent.paintToOffscreen(Unknown Source)
	at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(Unknown Source)
	at javax.swing.RepaintManager$PaintManager.paint(Unknown Source)
	at javax.swing.RepaintManager.paint(Unknown Source)
	at javax.swing.JComponent._paintImmediately(Unknown Source)
	at javax.swing.JComponent.paintImmediately(Unknown Source)
	at javax.swing.RepaintManager$4.run(Unknown Source)
	at javax.swing.RepaintManager$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
	at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
	at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
	at javax.swing.RepaintManager.access$1200(Unknown Source)
	at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
	at java.awt.event.InvocationEvent.dispatch(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$500(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: com.inductiveautomation.ignition.client.gateway_interface.GatewayException: Unable to locate function 'SQLTags.read'
	at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.newGatewayException(GatewayInterface.java:341)
	at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.sendMessage(GatewayInterface.java:315)
	at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.sendMessage(GatewayInterface.java:268)
	at com.inductiveautomation.ignition.client.gateway_interface.GatewayInterface.invoke(GatewayInterface.java:894)
	at com.inductiveautomation.ignition.client.sqltags.impl.db.DatasourceTagManager.read(DatasourceTagManager.java:434)
	... 51 more

```

This is the whole trace. The offending line is a copy/paste of Colby’s code.

I found this thread: [Client module with sql tag read?](http://forum.inductiveautomation.com/t/client-module-with-sql-tag-read/12699)

And was able to get it to work by using

`Tag tag = getAppContext().getTagManager().getTag(TagPathParser.parse("", tagPath));`

So seems like it is a bug on Ignitions end that has been known about since Feb '17 but not fixed yet.

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_[View the full topic](https://forum.inductiveautomation.com/t/is-there-a-way-to-read-tags-inside-a-component/10392)._