So I was able to successfully create a multi-page tiff from a multi-page pdf.Basically, the OOTB ImageMagickContentTransformerWorker has the hard coded [0] element in the source property in the transform code. (This is bad and I can't understand why this was left in)
properties.put(VAR_SOURCE, sourceFile.getAbsolutePath() + "[0]");
properties.put(VAR_TARGET, targetFile.getAbsolutePath());
In order to get the functionality I needed I had to create my own pdft2tiff-transform-context.xml. This bean definition uses the RuntimeExecutableContentTransformerWorker. It's transform function does not append the [0] to the source property:
// add the source and target properties
properties.put(VAR_SOURCE, sourceFile.getAbsolutePath());
properties.put(VAR_TARGET, targetFile.getAbsolutePath());
Here is my custom pdf2tiff context file:
<beans>
<bean id="transformer.worker.pdf2tiff"
class="org.alfresco.repo.content.transform.RuntimeExecutableContentTransformerWorker">
<property name="mimetypeService">
<ref bean="mimetypeService" />
</property>
<property name="checkCommand">
<bean class="org.alfresco.util.exec.RuntimeExec">
<property name="commandMap">
<map>
<entry key=".*">
<value>${img.exe} -version</value>
</entry>
</map>
</property>
<property name="errorCodes">
<value>2</value>
</property>
</bean>
</property>
<property name="transformCommand">
<bean class="org.alfresco.util.exec.RuntimeExec">
<property name="commandMap">
<map>
<entry key=".*">
<value>${img.exe} ${source} ${target}</value>
</entry>
</map>
</property>
<property name="errorCodes">
<value>2</value>
</property>
</bean>
</property>
<property name="explicitTransformations">
<list>
<bean
class="org.alfresco.repo.content.transform.ExplictTransformationDetails">
<property name="sourceMimetype">
<value>application/pdf</value>
</property>
<property name="targetMimetype">
<value>image/tiff</value>
</property>
</bean>
</list>
</property>
</bean>
<bean id="transformer.pdf2tiff"
class="org.alfresco.repo.content.transform.ProxyContentTransformer"
parent="baseContentTransformer">
<property name="worker">
<ref bean="transformer.worker.pdf2tiff" />
</property>
</bean>
</beans>
I also added a pdf2tiff-transform.properties file with the following:# External executable locations
img.exe=${img.root}/bin/convert
I then put these files in <TOMCAT_HOME>\webapps\alfresco\WEB-INF\classes\alfresco\subsystems\thirdparty\default\ and restarted my Alfresco instance. Re-ran my code and got exactly what I wanted. Hopefully this helps others.
