Merge pull request #34 from jjathman/remove-validation-exception

Fixes #32 - removes new validation API that doesn't use exceptions

hapi-fhir-base/src/main/java/ca/uhn/fhir/validation/FhirValidator.java

@@ -20,18 +20,15 @@ package ca.uhn.fhir.validation;
  * #L%
  */
 
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-
-import org.apache.commons.lang3.Validate;
-
-import com.phloc.schematron.ISchematronResource;
-
 import ca.uhn.fhir.context.FhirContext;
 import ca.uhn.fhir.model.api.Bundle;
 import ca.uhn.fhir.model.api.IResource;
 import ca.uhn.fhir.model.dstu.resource.OperationOutcome;
+import org.apache.commons.lang3.Validate;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
 
 /**
  * Resource validator, which checks resources for compliance against various validation schemes (schemas, schematrons, etc.)
@@ -133,25 +130,18 @@ public class FhirValidator {
 	/**
 	 * Validates a bundle instance, throwing a {@link ValidationFailureException} if the validation fails. This validation includes validation of all resources in the bundle.
 	 * 
-	 * @param theResource
+	 * @param theBundle
 	 *            The resource to validate
 	 * @throws ValidationFailureException
 	 *             If the validation fails
+     * @deprecated use {@link #validateWithResult(ca.uhn.fhir.model.api.Bundle)} instead
 	 */
+    @Deprecated
 	public void validate(Bundle theBundle) {
-		Validate.notNull(theBundle, "theBundle must not be null");
+        ValidationResult validationResult = validateWithResult(theBundle);
-
+        if (!validationResult.isSuccessful()) {
-		ValidationContext<Bundle> ctx = ValidationContext.forBundle(myContext, theBundle);
+            throw new ValidationFailureException(validationResult.getOperationOutcome());
-
+        }
-		for (IValidator next : myValidators) {
-			next.validateBundle(ctx);
-		}
-
-		OperationOutcome oo = ctx.getOperationOutcome();
-		if (oo != null && oo.getIssue().size() > 0) {
-			throw new ValidationFailureException(oo);
-		}
-
 	}
 
 	/**
@@ -161,21 +151,54 @@ public class FhirValidator {
 	 *            The resource to validate
 	 * @throws ValidationFailureException
 	 *             If the validation fails
+     * @deprecated use {@link #validateWithResult(ca.uhn.fhir.model.api.IResource)} instead
 	 */
+    @Deprecated
 	public void validate(IResource theResource) throws ValidationFailureException {
-		Validate.notNull(theResource, "theResource must not be null");
+        ValidationResult validationResult = validateWithResult(theResource);
+        if (!validationResult.isSuccessful()) {
+            throw new ValidationFailureException(validationResult.getOperationOutcome());
+        }
+    }
 
-		ValidationContext<IResource> ctx = ValidationContext.forResource(myContext, theResource);
+    /**
+     * Validates a bundle instance returning a {@link ca.uhn.fhir.validation.ValidationResult} which contains the results.
+     * This validation includes validation of all resources in the bundle.
+     *
+     * @param theBundle the bundle to validate
+     * @return the results of validation
+     * @since 0.7
+     */
+    public ValidationResult validateWithResult(Bundle theBundle) {
+        Validate.notNull(theBundle, "theBundle must not be null");
 
-		for (IValidator next : myValidators) {
+        ValidationContext<Bundle> ctx = ValidationContext.forBundle(myContext, theBundle);
-			next.validateResource(ctx);
-		}
 
-		OperationOutcome oo = ctx.getOperationOutcome();
+        for (IValidator next : myValidators) {
-		if (oo != null && oo.getIssue().size() > 0) {
+            next.validateBundle(ctx);
-			throw new ValidationFailureException(oo);
+        }
-		}
 
-	}
+        OperationOutcome oo = ctx.getOperationOutcome();
+        return ValidationResult.valueOf(oo);
+    }
 
+    /**
+     * Validates a resource instance returning a {@link ca.uhn.fhir.validation.ValidationResult} which contains the results.
+     *
+     * @param theResource the resource to validate
+     * @return the results of validation
+     * @since 0.7
+     */
+    public ValidationResult validateWithResult(IResource theResource) {
+        Validate.notNull(theResource, "theResource must not be null");
+
+        ValidationContext<IResource> ctx = ValidationContext.forResource(myContext, theResource);
+
+        for (IValidator next : myValidators) {
+            next.validateResource(ctx);
+        }
+
+        OperationOutcome oo = ctx.getOperationOutcome();
+        return ValidationResult.valueOf(oo);
+    }
 }

hapi-fhir-base/src/main/java/ca/uhn/fhir/validation/ValidationResult.java

@@ -0,0 +1,72 @@
+package ca.uhn.fhir.validation;
+
+/*
+ * #%L
+ * HAPI FHIR - Core Library
+ * %%
+ * Copyright (C) 2014 University Health Network
+ * %%
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * #L%
+ */
+
+import ca.uhn.fhir.model.dstu.resource.OperationOutcome;
+
+/**
+ * Encapsulates the results of validation
+ *
+ * @see ca.uhn.fhir.validation.FhirValidator
+ * @since 0.7
+ */
+public class ValidationResult {
+    private OperationOutcome myOperationOutcome;
+
+    private ValidationResult(OperationOutcome myOperationOutcome) {
+        this.myOperationOutcome = myOperationOutcome;
+    }
+
+    public static ValidationResult valueOf(OperationOutcome myOperationOutcome) {
+        return new ValidationResult(myOperationOutcome);
+    }
+
+    public OperationOutcome getOperationOutcome() {
+        return myOperationOutcome;
+    }
+
+    @Override
+    public String toString() {
+        return "ValidationResult{" +
+                "myOperationOutcome=" + myOperationOutcome +
+                ", description='" + toDescription() + '\'' +
+                '}';
+    }
+
+    private String toDescription() {
+        StringBuilder b = new StringBuilder(100);
+        if (myOperationOutcome != null) {
+            OperationOutcome.Issue issueFirstRep = myOperationOutcome.getIssueFirstRep();
+            b.append(issueFirstRep.getDetails().getValue());
+            b.append(" - ");
+            b.append(issueFirstRep.getLocationFirstRep().getValue());
+        }
+        return b.toString();
+    }
+
+    /**
+     * Was the validation successful
+     * @return true if the validation was successful
+     */
+    public boolean isSuccessful() {
+        return myOperationOutcome == null || myOperationOutcome.getIssue().isEmpty();
+    }
+}

hapi-fhir-base/src/test/java/ca/uhn/fhir/validation/ResourceValidatorTest.java

@@ -1,17 +1,22 @@
 package ca.uhn.fhir.validation;
 
-import static org.hamcrest.Matchers.*;
-import static org.junit.Assert.*;
-
-import java.io.IOException;
-
-import org.apache.commons.io.IOUtils;
-import org.junit.Test;
-
 import ca.uhn.fhir.context.FhirContext;
 import ca.uhn.fhir.model.api.Bundle;
+import ca.uhn.fhir.model.dstu.resource.OperationOutcome;
 import ca.uhn.fhir.model.dstu.resource.Patient;
 import ca.uhn.fhir.model.dstu.valueset.ContactSystemEnum;
+import org.apache.commons.io.IOUtils;
+import org.junit.Test;
+
+import java.io.IOException;
+
+import static org.hamcrest.Matchers.containsString;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 public class ResourceValidatorTest {
 
@@ -45,9 +50,7 @@ public class ResourceValidatorTest {
 		String res = IOUtils.toString(getClass().getClassLoader().getResourceAsStream("atom-document-large.xml"));
 		Bundle b = ourCtx.newXmlParser().parseBundle(res);
 
-		FhirValidator val = ourCtx.newValidator();
+        FhirValidator val = createFhirValidator();
-		val.setValidateAgainstStandardSchema(true);
-		val.setValidateAgainstStandardSchematron(true);
 
 		val.validate(b);
 
@@ -64,7 +67,6 @@ public class ResourceValidatorTest {
 		}
 	}
 
-	
 	@Test
 	public void testSchematronResourceValidator() throws IOException {
 		String res = IOUtils.toString(getClass().getClassLoader().getResourceAsStream("patient-example-dicom.xml"));
@@ -74,20 +76,60 @@ public class ResourceValidatorTest {
 		val.setValidateAgainstStandardSchema(false);
 		val.setValidateAgainstStandardSchematron(true);
 
-		val.validate(p);
+        ValidationResult validationResult = val.validateWithResult(p);
+        assertTrue(validationResult.isSuccessful());
+
+        p.getTelecomFirstRep().setValue("123-4567");
+        validationResult = val.validateWithResult(p);
+        assertFalse(validationResult.isSuccessful());
+        OperationOutcome operationOutcome = validationResult.getOperationOutcome();
+        ourLog.info(ourCtx.newXmlParser().setPrettyPrint(true).encodeResourceToString(operationOutcome));
+        assertEquals(1, operationOutcome.getIssue().size());
+        assertThat(operationOutcome.getIssueFirstRep().getDetails().getValue(), containsString("Inv-2: A system is required if a value is provided."));
 
-		p.getTelecomFirstRep().setValue("123-4567");
-		try {
-			val.validate(p);
-			fail();
-		} catch (ValidationFailureException e) {
-			ourLog.info(ourCtx.newXmlParser().setPrettyPrint(true).encodeResourceToString(e.getOperationOutcome()));
-			assertEquals(1, e.getOperationOutcome().getIssue().size());
-			assertThat(e.getOperationOutcome().getIssueFirstRep().getDetails().getValue(), containsString("Inv-2: A system is required if a value is provided."));
-		}
-		
 		p.getTelecomFirstRep().setSystem(ContactSystemEnum.EMAIL);
-		val.validate(p);
+        validationResult = val.validateWithResult(p);
+        assertTrue(validationResult.isSuccessful());
 	}
-	
+
+    @Test
+    public void testSchemaBundleValidatorIsSuccessful() throws IOException {
+        String res = IOUtils.toString(getClass().getClassLoader().getResourceAsStream("atom-document-large.xml"));
+        Bundle b = ourCtx.newXmlParser().parseBundle(res);
+
+        FhirValidator val = createFhirValidator();
+
+        ValidationResult result = val.validateWithResult(b);
+        assertTrue(result.isSuccessful());
+        OperationOutcome operationOutcome = result.getOperationOutcome();
+        assertNotNull(operationOutcome);
+        assertEquals(0, operationOutcome.getIssue().size());
+    }
+
+    @Test
+    public void testSchemaBundleValidatorFails() throws IOException {
+        String res = IOUtils.toString(getClass().getClassLoader().getResourceAsStream("atom-document-large.xml"));
+        Bundle b = ourCtx.newXmlParser().parseBundle(res);
+
+        FhirValidator val = createFhirValidator();
+
+        ValidationResult validationResult = val.validateWithResult(b);
+        assertTrue(validationResult.isSuccessful());
+
+        Patient p = (Patient) b.getEntries().get(0).getResource();
+        p.getTelecomFirstRep().setValue("123-4567");
+        validationResult = val.validateWithResult(b);
+        assertFalse(validationResult.isSuccessful());
+        OperationOutcome operationOutcome = validationResult.getOperationOutcome();
+        ourLog.info(ourCtx.newXmlParser().setPrettyPrint(true).encodeResourceToString(operationOutcome));
+        assertEquals(1, operationOutcome.getIssue().size());
+        assertThat(operationOutcome.getIssueFirstRep().getDetails().getValue(), containsString("Inv-2: A system is required if a value is provided."));
+    }
+
+    private FhirValidator createFhirValidator() {
+        FhirValidator val = ourCtx.newValidator();
+        val.setValidateAgainstStandardSchema(true);
+        val.setValidateAgainstStandardSchematron(true);
+        return val;
+    }
 }

hapi-fhir-base/src/test/java/ca/uhn/fhir/validation/ValidationResultTest.java

@@ -0,0 +1,46 @@
+package ca.uhn.fhir.validation;
+
+import ca.uhn.fhir.model.dstu.resource.OperationOutcome;
+import org.junit.Test;
+
+import java.util.List;
+import java.util.UUID;
+
+import static org.hamcrest.Matchers.containsString;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertTrue;
+
+public class ValidationResultTest {
+
+    @Test
+    public void isSuccessful_IsTrueForNullOperationOutcome() {
+        ValidationResult result = ValidationResult.valueOf(null);
+        assertTrue(result.isSuccessful());
+    }
+
+    @Test
+    public void isSuccessful_IsTrueForNoIssues() {
+        OperationOutcome operationOutcome = new OperationOutcome();
+        // make sure a non-null ID doesn't cause the validation result to be a fail
+        operationOutcome.setId(UUID.randomUUID().toString());
+        ValidationResult result = ValidationResult.valueOf(operationOutcome);
+        assertTrue(result.isSuccessful());
+    }
+
+    @Test
+    public void isSuccessful_FalseForIssues() {
+        OperationOutcome operationOutcome = new OperationOutcome();
+        OperationOutcome.Issue issue = operationOutcome.addIssue();
+        String errorMessage = "There was a validation problem";
+        issue.setDetails(errorMessage);
+        ValidationResult result = ValidationResult.valueOf(operationOutcome);
+        assertFalse(result.isSuccessful());
+        List<OperationOutcome.Issue> issues = result.getOperationOutcome().getIssue();
+        assertEquals(1, issues.size());
+        assertEquals(errorMessage, issues.get(0).getDetails().getValue());
+
+        assertThat("ValidationResult#toString should contain the issue description", result.toString(), containsString(errorMessage));
+    }
+}