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From "Senduran (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SYNAPSE-1005) Validate mediator throws StackOverflowError, when the schema has Cyclic import or include
Date Sat, 21 May 2016 05:10:12 GMT
Senduran created SYNAPSE-1005:
---------------------------------

             Summary: Validate mediator throws StackOverflowError, when the schema has Cyclic
import or include
                 Key: SYNAPSE-1005
                 URL: https://issues.apache.org/jira/browse/SYNAPSE-1005
             Project: Synapse
          Issue Type: Bug
          Components: Core
    Affects Versions: 2.1
            Reporter: Senduran
            Assignee: Hiranya Jayathilaka


sample proxy service 
{code:xml}
<proxy xmlns="http://ws.apache.org/ns/synapse" name="validateRequest" transports="http"
startOnLoad="true">
    <target>
        <inSequence>
            <validate>
                <schema key="A.xsd"/>
                <resource location="B.xsd" key="B.xsd"/>
                <resource location="C.xsd" key="C.xsd"/>
                <resource location="D.xsd" key="D.xsd"/>
                <on-fail>
                    <makefault version="soap11">
                        <code xmlns:tns="http://www.w3.org/2003/05/soap-envelope" value="tns:Receiver"/>
                        <reason value="Invalid Request!!!"/>
                        <role/>
                    </makefault>
                    <log level="full"/>
                    <property name="RESPONSE" value="true"/>
                    <header name="To" action="remove"/>
                    <send/>
                    <drop/>
                </on-fail>
            </validate>
            <property name="RESPONSE" value="true"/>
            <header name="To" action="remove"/>
            <send/>
        </inSequence>
    </target>
    <description/>
</proxy>
{code}

Here A includes B, B includes C and  C includes D.
But say for example if C includes Both D and B there is a cyclic reference. 

So the following exception will be thrown
{code}
java.lang.StackOverflowError
	at com.ctc.wstx.sw.BaseStreamWriter.<init>(BaseStreamWriter.java:259)
	at com.ctc.wstx.sw.BaseNsStreamWriter.<init>(BaseNsStreamWriter.java:122)
	at com.ctc.wstx.sw.SimpleNsStreamWriter.<init>(SimpleNsStreamWriter.java:59)
	at com.ctc.wstx.stax.WstxOutputFactory.createSW(WstxOutputFactory.java:275)
	at com.ctc.wstx.stax.WstxOutputFactory.createXMLStreamWriter(WstxOutputFactory.java:124)
	at org.apache.axiom.util.stax.wrapper.XMLOutputFactoryWrapper.createXMLStreamWriter(XMLOutputFactoryWrapper.java:66)
	at org.apache.axiom.util.stax.wrapper.WrappingXMLOutputFactory.createXMLStreamWriter(WrappingXMLOutputFactory.java:90)
	at org.apache.axiom.util.stax.dialect.WoodstoxOutputFactoryWrapper.createXMLStreamWriter(WoodstoxOutputFactoryWrapper.java:48)
	at org.apache.axiom.util.stax.wrapper.XMLOutputFactoryWrapper.createXMLStreamWriter(XMLOutputFactoryWrapper.java:66)
	at org.apache.axiom.om.util.StAXUtils$4.run(StAXUtils.java:364)
	at java.security.AccessController.doPrivileged(Native Method)
	at org.apache.axiom.om.util.StAXUtils.createXMLStreamWriter(StAXUtils.java:360)
	at org.apache.axiom.om.util.StAXUtils.createXMLStreamWriter(StAXUtils.java:353)
	at org.apache.axiom.om.impl.llom.OMSerializableImpl.serialize(OMSerializableImpl.java:130)
	at org.apache.synapse.util.resolver.ResourceMap.resolve(ResourceMap.java:93)
	at org.apache.synapse.util.jaxp.SchemaResourceResolver.resolveResource(SchemaResourceResolver.java:47)
	at org.apache.xerces.util.DOMEntityResolverWrapper.resolveEntity(Unknown Source)
	at org.apache.xerces.impl.XMLEntityManager.resolveEntity(Unknown Source)
	at org.apache.xerces.impl.xs.XMLSchemaLoader.resolveDocument(Unknown Source)
	at org.apache.xerces.impl.xs.traversers.XSDHandler.resolveSchema(Unknown Source)
	at org.apache.xerces.impl.xs.traversers.XSDHandler.constructTrees(Unknown Source)
	at org.apache.xerces.impl.xs.traversers.XSDHandler.constructTrees(Unknown Source)
	at org.apache.xerces.impl.xs.traversers.XSDHandler.constructTrees(Unknown Source)
{code}



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