add Json Schema Validator for date field

src/main/java/com/github/fge/jsonschema/format/common/DateAttribute.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2014, Francis Galiegue ([email protected])
+ *
+ * This software is dual-licensed under:
+ *
+ * - the Lesser General Public License (LGPL) version 3.0 or, at your option, any
+ *   later version;
+ * - the Apache Software License (ASL) version 2.0.
+ *
+ * The text of this file and of both licenses is available at the root of this
+ * project or, if you have the jar distribution, in directory META-INF/, under
+ * the names LGPL-3.0.txt and ASL-2.0.txt respectively.
+ *
+ * Direct link to the sources:
+ *
+ * - LGPL 3.0: https://www.gnu.org/licenses/lgpl-3.0.txt
+ * - ASL 2.0: http://www.apache.org/licenses/LICENSE-2.0.txt
+ */
+
+package com.github.fge.jsonschema.format.common;
+
+import static org.joda.time.DateTimeFieldType.dayOfMonth;
+import static org.joda.time.DateTimeFieldType.monthOfYear;
+import static org.joda.time.DateTimeFieldType.year;
+
+import com.github.fge.jackson.NodeType;
+import com.github.fge.jsonschema.core.exceptions.ProcessingException;
+import com.github.fge.jsonschema.core.report.ProcessingReport;
+import com.github.fge.jsonschema.format.AbstractFormatAttribute;
+import com.github.fge.jsonschema.format.FormatAttribute;
+import com.github.fge.jsonschema.processors.data.FullData;
+import com.github.fge.msgsimple.bundle.MessageBundle;
+import com.google.common.collect.ImmutableList;
+import org.joda.time.format.DateTimeFormatter;
+import org.joda.time.format.DateTimeFormatterBuilder;
+
+import java.util.List;
+
+/**
+ * Validator for the {@code date} format attribute
+ */
+public final class DateAttribute
+    extends AbstractFormatAttribute
+{
+    private static final List<String> FORMATS = ImmutableList.of(
+        "yyyy-MM-dd"
+    );
+    private static final DateTimeFormatter FORMATTER;
+
+    static {
+
+        DateTimeFormatterBuilder builder = new DateTimeFormatterBuilder()
+                .appendFixedDecimal(year(), 4)
+                .appendLiteral('-')
+                .appendFixedDecimal(monthOfYear(), 2)
+                .appendLiteral('-')
+                .appendFixedDecimal(dayOfMonth(), 2);
+
+        FORMATTER = builder.toFormatter();
+    }
+
+    private static final FormatAttribute INSTANCE = new DateAttribute();
+
+    public static FormatAttribute getInstance()
+    {
+        return INSTANCE;
+    }
+
+    private DateAttribute()
+    {
+        super("date", NodeType.STRING);
+    }
+
+    @Override
+    public void validate(final ProcessingReport report,
+        final MessageBundle bundle, final FullData data)
+        throws ProcessingException
+    {
+        final String value = data.getInstance().getNode().textValue();
+
+        try {
+            FORMATTER.parseDateTime(value);
+        } catch (IllegalArgumentException ignored) {
+            report.error(newMsg(data, bundle, "err.format.invalidDate")
+                .putArgument("value", value).putArgument("expected", FORMATS));
+        }
+    }
+}

src/main/java/com/github/fge/jsonschema/library/format/CommonFormatAttributesDictionary.java

@@ -22,6 +22,7 @@
 import com.github.fge.jsonschema.core.util.Dictionary;
 import com.github.fge.jsonschema.core.util.DictionaryBuilder;
 import com.github.fge.jsonschema.format.FormatAttribute;
+import com.github.fge.jsonschema.format.common.DateAttribute;
 import com.github.fge.jsonschema.format.common.EmailAttribute;
 import com.github.fge.jsonschema.format.common.IPv6Attribute;
 import com.github.fge.jsonschema.format.common.RFC3339DateTimeAttribute;
@@ -52,6 +53,10 @@ private CommonFormatAttributesDictionary()
         attribute = RFC3339DateTimeAttribute.getInstance();
         builder.addEntry(name, attribute);
 
+        name = "date";
+        attribute = DateAttribute.getInstance();
+        builder.addEntry(name, attribute);
+
         name = "email";
         attribute = EmailAttribute.getInstance();
         builder.addEntry(name, attribute);

src/test/java/com/github/fge/jsonschema/format/common/DateTest.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2014, Francis Galiegue ([email protected])
+ *
+ * This software is dual-licensed under:
+ *
+ * - the Lesser General Public License (LGPL) version 3.0 or, at your option, any
+ *   later version;
+ * - the Apache Software License (ASL) version 2.0.
+ *
+ * The text of this file and of both licenses is available at the root of this
+ * project or, if you have the jar distribution, in directory META-INF/, under
+ * the names LGPL-3.0.txt and ASL-2.0.txt respectively.
+ *
+ * Direct link to the sources:
+ *
+ * - LGPL 3.0: https://www.gnu.org/licenses/lgpl-3.0.txt
+ * - ASL 2.0: http://www.apache.org/licenses/LICENSE-2.0.txt
+ */
+
+package com.github.fge.jsonschema.format.common;
+
+import java.io.IOException;
+
+public final class DateTest
+    extends CommonFormatAttributeTest
+{
+    public DateTest()
+        throws IOException
+    {
+        super("date");
+    }
+}

src/test/resources/format/common/date.json

@@ -0,0 +1,80 @@
+[
+  {
+    "data": "2012-12-02",
+    "valid": true
+  },
+  {
+    "data": "2001-01-12",
+    "valid": true
+  },
+  {
+    "data": "2012",
+    "valid": false,
+    "message": "err.format.invalidDate",
+    "msgData": {
+      "value": "2012",
+      "expected": [ "yyyy-MM-dd" ]
+    },
+    "msgParams": [ "value", "expected" ]
+  },
+  {
+    "data": "2012-01",
+    "valid": false,
+    "message": "err.format.invalidDate",
+    "msgData": {
+      "value": "2012-01",
+      "expected": [ "yyyy-MM-dd" ]
+    },
+    "msgParams": [ "value", "expected" ]
+  },
+  {
+    "data": "2012-01-32",
+    "valid": false,
+    "message": "err.format.invalidDate",
+    "msgData": {
+      "value": "2012-01-32",
+      "expected": [ "yyyy-MM-dd" ]
+    },
+    "msgParams": [ "value", "expected" ]
+  },
+  {
+    "data": "2012-09-31",
+    "valid": false,
+    "message": "err.format.invalidDate",
+    "msgData": {
+      "value": "2012-09-31",
+      "expected": [ "yyyy-MM-dd" ]
+    },
+    "msgParams": [ "value", "expected" ]
+  },
+  {
+    "data": "201202030",
+    "valid": false,
+    "message": "err.format.invalidDate",
+    "msgData": {
+      "value": "201202030",
+      "expected": [ "yyyy-MM-dd" ]
+    },
+    "msgParams": [ "value", "expected" ]
+  },
+  {
+    "data": "2012-12-02T13:05:00+0100",
+    "valid": false,
+    "message": "err.format.invalidDate",
+    "msgData": {
+      "value": "2012-12-02T13:05:00+0100",
+      "expected": [ "yyyy-MM-dd" ]
+    },
+    "msgParams": [ "value", "expected" ]
+  },
+  {
+    "data": "a",
+    "valid": false,
+    "message": "err.format.invalidDate",
+    "msgData": {
+      "value": "a",
+      "expected": [ "yyyy-MM-dd" ]
+    },
+    "msgParams": [ "value", "expected" ]
+  }
+]