cache interpolation results

Author: SentryMan

validator/src/main/java/io/avaje/validation/adapter/ValidationContext.java

@@ -37,6 +37,8 @@ interface Message {
     String template();
 
     Map<String, Object> attributes();
+
+    String lookupkey();
   }
 
   /**

validator/src/main/java/io/avaje/validation/core/DMessage.java

@@ -4,23 +4,20 @@
 
 import java.util.Map;
 
-final class DMessage implements ValidationContext.Message {
+final record DMessage(String template, Map<String, Object> attributes, int dedupNumber)
+    implements ValidationContext.Message {
 
-  private final String template;
-  private final Map<String, Object> attributes;
+  // templates can be the same across multiple adapters
+  // these numbers ensures no cache collision
+  private static int messageCounter = 0;
 
   DMessage(String template, Map<String, Object> attributes) {
-    this.template = template;
-    this.attributes = attributes;
-  }
 
-  @Override
-  public String template() {
-    return template;
+    this(template, attributes, messageCounter++);
   }
 
   @Override
-  public Map<String, Object> attributes() {
-    return attributes;
+  public String lookupkey() {
+    return template + dedupNumber;
   }
 }

validator/src/main/java/io/avaje/validation/core/DTemplateLookup.java

@@ -1,12 +1,9 @@
 package io.avaje.validation.core;
 
-import java.util.HashMap;
 import java.util.Locale;
-import java.util.Map;
 
 final class DTemplateLookup {
   private final DResourceBundleManager bundleManager;
-  private final Map<String, String> messageCache = new HashMap<>();
 
   DTemplateLookup(DResourceBundleManager defaultBundle) {
     this.bundleManager = defaultBundle;
@@ -17,7 +14,7 @@ String lookup(String template, Locale resolvedLocale) {
       return template;
     }
     final String key = template.substring(1, template.length() - 1);
-    final String msg = messageCache.computeIfAbsent(key + resolvedLocale, k -> bundleManager.message(key, resolvedLocale));
+    final String msg = bundleManager.message(key, resolvedLocale);
     if (msg != null) {
       return msg;
     }

validator/src/main/java/io/avaje/validation/core/DValidationType.java

@@ -1,11 +1,9 @@
 package io.avaje.validation.core;
 
-import io.avaje.validation.adapter.ValidationAdapter;
-import io.avaje.validation.adapter.ValidationRequest;
-
-import java.lang.reflect.Type;
 import java.util.Locale;
 
+import io.avaje.validation.adapter.ValidationAdapter;
+
 final class DValidationType<T> implements ValidationType<T> {
 
   private final DValidator validator;

validator/src/main/java/io/avaje/validation/core/DValidator.java

@@ -9,6 +9,7 @@
 import java.lang.reflect.Type;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
@@ -18,7 +19,6 @@
 
 import io.avaje.lang.Nullable;
 import io.avaje.validation.Validator;
-import io.avaje.validation.Validator.AnnotationAdapterBuilder;
 import io.avaje.validation.adapter.ValidationAdapter;
 import io.avaje.validation.adapter.ValidationContext;
 import io.avaje.validation.adapter.ValidationRequest;
@@ -32,6 +32,7 @@ final class DValidator implements Validator, ValidationContext {
   private final MessageInterpolator interpolator;
   private final LocaleResolver localeResolver;
   private final DTemplateLookup templateLookup;
+  private final Map<String, String> messageCache = new HashMap<>();
 
   DValidator(
       List<AdapterFactory> factories,
@@ -118,9 +119,14 @@ ValidationRequest request(@Nullable Locale locale) {
   String interpolate(Message msg, Locale requestLocale) {
     // resolve the locale to use to produce the message
     final Locale locale = localeResolver.resolve(requestLocale);
-    // lookup in resource bundles using resolved locale and template
-    final String template = templateLookup.lookup(msg.template(), locale);
-    return interpolator.interpolate(template, msg.attributes());
+
+    return messageCache.computeIfAbsent(
+        msg.lookupkey() + locale,
+        k -> {
+          // lookup in resource bundles using resolved locale and template
+          final String template = templateLookup.lookup(msg.template(), locale);
+          return interpolator.interpolate(template, msg.attributes());
+        });
   }
 
   /** Implementation of Validator.Builder. */

validator/src/test/java/io/avaje/validation/core/BasicTest.java

@@ -11,7 +11,7 @@
 
 abstract class BasicTest {
 
-  protected final Validator validator =
+  protected static final Validator validator =
     Validator.builder()
       .add(Address.class, AddressValidationAdapter::new)
       .add(Contact.class, ContactValidationAdapter::new)

validator/src/test/java/io/avaje/validation/core/NotNullLocaleTest.java

@@ -11,15 +11,22 @@ class NotNullLocaleTest extends BasicTest {
 
   @Test
   void testSize_DefaultLocale() {
-    var contact = new Contact("ok", null);
-    ConstraintViolation constraint = one(contact, Locale.ENGLISH);
+    final var contact = new Contact("ok", null);
+    final ConstraintViolation constraint = one(contact, Locale.ENGLISH);
+    assertThat(constraint.message()).isEqualTo("must not be null");
+  }
+
+  @Test
+  void testSize_DefaultLocale2() {
+    final var contact = new Contact("ok", null);
+    final ConstraintViolation constraint = one(contact, Locale.ENGLISH);
     assertThat(constraint.message()).isEqualTo("must not be null");
   }
 
   @Test
   void testSize_DE() {
-    var contact = new Contact("ok", null);
-    ConstraintViolation constraint = one(contact, Locale.GERMAN);
+    final var contact = new Contact("ok", null);
+    final ConstraintViolation constraint = one(contact, Locale.GERMAN);
     assertThat(constraint.message()).isEqualTo("darf nicht null sein");
   }