IDEA-176558 Problem validating XML document

adding support for jdk.xml.maxOccurLimit property

xml/tests/src/com/intellij/codeInsight/daemon/XmlHighlightingTest.java

@@ -67,6 +67,7 @@ import com.intellij.util.containers.ContainerUtil;
 import com.intellij.xml.XmlAttributeDescriptor;
 import com.intellij.xml.XmlBundle;
 import com.intellij.xml.XmlElementDescriptor;
+import com.intellij.xml.actions.validate.ValidateXmlActionHandler;
 import com.intellij.xml.impl.schema.XmlElementDescriptorImpl;
 import com.intellij.xml.util.*;
 import gnu.trove.THashSet;
@@ -2108,6 +2109,15 @@ public class XmlHighlightingTest extends DaemonAnalyzerTestCase {
     doDoTest(true, false);
   }
 
+  public void testMaxOccurLimitValidation() throws Exception {
+    configureByFiles(null, BASE_PATH + "MaxOccurLimit.xml", BASE_PATH + "MaxOccurLimit.xsd");
+    assertTrue(doHighlighting().stream().anyMatch(info -> info.getSeverity() == HighlightSeverity.ERROR));
+
+    configureByFiles(null, BASE_PATH + "MaxOccurLimit.xml", BASE_PATH + "MaxOccurLimit.xsd");
+    System.setProperty(ValidateXmlActionHandler.JDK_XML_MAX_OCCUR_LIMIT, "10000");
+    assertFalse(doHighlighting().stream().anyMatch(info -> info.getSeverity() == HighlightSeverity.ERROR));
+  }
+
   public void testTheSameElement() throws Exception {
     doTest(
       new VirtualFile[] {

xml/tests/testData/xml/MaxOccurLimit.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<procedure xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:noNamespaceSchemaLocation="MaxOccurLimit.xsd">
+    <parameter name="caaxtgt">
+        <string>
+            <processingType>TYPE1</processingType>
+        </string>
+    </parameter>
+</procedure>

xml/tests/testData/xml/MaxOccurLimit.xsd

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+    <xs:element name="procedure">
+        <xs:complexType>
+            <xs:sequence>
+                <xs:element name="parameter" type="parameterType" minOccurs="0" maxOccurs="1300"/>
+            </xs:sequence>
+        </xs:complexType>
+    </xs:element>
+
+    <xs:complexType name="parameterType">
+        <xs:sequence>
+            <xs:choice>
+                <xs:element name="string" type="strVarType">
+                </xs:element>
+            </xs:choice>
+        </xs:sequence>
+        <xs:attribute name="name" type="xs:string" use="required"/>
+    </xs:complexType>
+
+    <xs:complexType name="strVarType">
+        <xs:sequence>
+            <xs:choice>
+                <xs:sequence minOccurs="0">
+                    <xs:element name="processingType" minOccurs="0">
+                        <xs:simpleType>
+                            <xs:restriction base="xs:string">
+                                <xs:enumeration value="TYPE1"/>
+                            </xs:restriction>
+                        </xs:simpleType>
+                    </xs:element>
+                </xs:sequence>
+            </xs:choice>
+            <xs:element name="choice" type="xs:string" minOccurs="0" maxOccurs="1300"/>
+        </xs:sequence>
+    </xs:complexType>
+</xs:schema>

xml/xml-psi-impl/src/com/intellij/xml/actions/validate/ValidateXmlActionHandler.java

@@ -32,11 +32,15 @@ import org.apache.xerces.impl.XMLEntityManager;
 import org.apache.xerces.impl.XercesAccessor;
 import org.apache.xerces.jaxp.JAXPConstants;
 import org.apache.xerces.jaxp.SAXParserFactoryImpl;
+import org.apache.xerces.util.SecurityManager;
 import org.apache.xerces.util.XMLGrammarPoolImpl;
 import org.apache.xerces.xni.grammars.XMLGrammarPool;
 import org.jetbrains.annotations.NonNls;
 import org.jetbrains.annotations.Nullable;
-import org.xml.sax.*;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+import org.xml.sax.SAXNotRecognizedException;
+import org.xml.sax.SAXParseException;
 import org.xml.sax.helpers.DefaultHandler;
 
 import javax.xml.XMLConstants;
@@ -47,6 +51,8 @@ import java.io.StringReader;
 import java.util.Arrays;
 import java.util.Map;
 
+import static com.sun.org.apache.xerces.internal.impl.Constants.SECURITY_MANAGER;
+
 /**
  * @author Mike
  */
@@ -62,6 +68,7 @@ public class ValidateXmlActionHandler {
   private static final Key<VirtualFile[]> DEPENDENT_FILES_KEY = Key.create("GrammarPoolFilesKey");
   private static final Key<String[]> KNOWN_NAMESPACES_KEY = Key.create("KnownNamespacesKey");
   private static final Key<Map<String, XMLEntityManager.Entity>> ENTITIES_KEY = Key.create("EntityManagerKey");
+  public static final String JDK_XML_MAX_OCCUR_LIMIT = "jdk.xml.maxOccurLimit";
 
   private Project myProject;
   private XmlFile myFile;
@@ -240,6 +247,12 @@ public class ValidateXmlActionHandler {
       } catch (Exception ignore) {
       }
 
+      String property = System.getProperty(JDK_XML_MAX_OCCUR_LIMIT);
+      if (property != null) {
+        SecurityManager securityManager = (SecurityManager)parser.getProperty(SECURITY_MANAGER);
+        securityManager.setMaxOccurNodeLimit(Integer.parseInt(property));
+      }
+
       if (schemaChecking) { // when dtd checking schema refs could not be validated @see http://marc.theaimsgroup.com/?l=xerces-j-user&m=112504202423704&w=2
         XMLGrammarPool grammarPool = getGrammarPool(myFile, myForceChecking);
         configureEntityManager(myFile, parser);