fixes #188 couldnot validate the email format in json schema

Author: stevehu

src/main/java/com/networknt/schema/FormatKeyword.java

@@ -21,6 +21,7 @@
 import java.util.Map;
 
 import com.fasterxml.jackson.databind.JsonNode;
+import com.networknt.schema.format.EmailValidator;
 
 public class FormatKeyword implements Keyword {
     private final ValidatorTypeCode type;
@@ -29,6 +30,7 @@ public class FormatKeyword implements Keyword {
     private final String DATE = "date";
     private final String DATE_TIME = "date-time";
     private final String UUID = "uuid";
+    private final String EMAIL = "email";
 
     public FormatKeyword(ValidatorTypeCode type, Map<String, Format> formats) {
         this.type = type;
@@ -51,6 +53,8 @@ public JsonValidator newValidator(String schemaPath, JsonNode schemaNode, JsonSc
                 return new DateTimeValidator(schemaPath, schemaNode, parentSchema, validationContext, formatName);
             } else if (formatName.equals(UUID)) {
                 return new UUIDValidator(schemaPath, schemaNode, parentSchema, validationContext, formatName);
+            } else if (formatName.equals(EMAIL)) {
+                return new EmailValidator(schemaPath, schemaNode, parentSchema, validationContext, formatName);
             }
         }
         return new FormatValidator(schemaPath, schemaNode, parentSchema, validationContext, format);

src/main/java/com/networknt/schema/JsonMetaSchema.java

@@ -45,12 +45,8 @@ private static class DraftV4 {
         private static final String DRAFT_4_ID = "id";
         public static final List<Format> BUILTIN_FORMATS = new ArrayList<Format>();
         static {
-            BUILTIN_FORMATS.add(pattern("date-time", 
-                    "^\\d{4}-(?:0[0-9]{1}|1[0-2]{1})-(0?[1-9]|[12][0-9]|3[01])[tT ]\\d{2}:\\d{2}:\\d{2}(\\.\\d+)?([zZ]?|[+-]\\d{2}:\\d{2})$"));
-            BUILTIN_FORMATS.add(pattern("date", "^\\d{4}-(?:0[0-9]{1}|1[0-2]{1})-(0?[1-9]|[12][0-9]|3[01])$"));
             BUILTIN_FORMATS.add(pattern("time", "^\\d{2}:\\d{2}:\\d{2}$"));
-            BUILTIN_FORMATS.add(pattern("email", "^\\S+@\\S+$"));
-            BUILTIN_FORMATS.add(pattern("ip-address", 
+            BUILTIN_FORMATS.add(pattern("ip-address",
                     "^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"));
             BUILTIN_FORMATS.add(pattern("ipv4", 
                     "^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"));

src/main/java/com/networknt/schema/JsonSchemaFactory.java

@@ -185,9 +185,7 @@ private JsonSchemaFactory(
 
     /**
      * Builder without keywords or formats.
-     * 
-     * Use {@link #getDraftV4()} instead, or if you need a builder based on Draft4, use
-     * 
+     *
      * <code>
      * JsonSchemaFactory.builder(JsonSchemaFactory.getDraftV4()).build();
      * </code>