added format and pattern support for date fieldtype + fixed nullpointer when TransportClientFactoryBean configuration is java config only.

src/main/java/org/springframework/data/elasticsearch/annotations/DateFormat.java

@@ -0,0 +1,17 @@
+package org.springframework.data.elasticsearch.annotations;
+
+/**
+ * @author Jakub Vavrik
+ *
+ * Values based on reference doc - http://www.elasticsearch.org/guide/reference/mapping/date-format/
+ */
+public enum DateFormat {
+    none, custom, basic_date, basic_date_time, basic_date_time_no_millis, basic_ordinal_date, basic_ordinal_date_time,
+    basic_ordinal_date_time_no_millis, basic_time, basic_time_no_millis, basic_t_time, basic_t_time_no_millis,
+    basic_week_date, basic_week_date_time, basic_week_date_time_no_millis, date, date_hour, date_hour_minute,
+    date_hour_minute_second, date_hour_minute_second_fraction, date_hour_minute_second_millis, date_optional_time,
+    date_time, date_time_no_millis, hour, hour_minute, hour_minute_second, hour_minute_second_fraction,
+    hour_minute_second_millis, ordinal_date, ordinal_date_time, ordinal_date_time_no_millis, time, time_no_millis,
+    t_time, t_time_no_millis, week_date, week_date_time, weekDateTimeNoMillis, week_year, weekyearWeek,
+    weekyearWeekDay, year, year_month, year_month_day
+}

src/main/java/org/springframework/data/elasticsearch/annotations/Field.java

@@ -22,6 +22,7 @@ import java.lang.annotation.*;
  * @author Mohsin Husen
  * @author Artur Konczak
  * @author Jonathan Yan
+ * @author Jakub Vavrik
  */
 @Retention(RetentionPolicy.RUNTIME)
 @Target(ElementType.FIELD)
@@ -32,6 +33,10 @@ public @interface Field {
 
     FieldIndex index() default FieldIndex.analyzed;
 
+    DateFormat format() default DateFormat.none;
+
+    String pattern() default "";
+
     boolean store() default false;
 
     String searchAnalyzer() default "";

src/main/java/org/springframework/data/elasticsearch/client/TransportClientFactoryBean.java

@@ -35,6 +35,7 @@ import static org.elasticsearch.common.settings.ImmutableSettings.settingsBuilde
  *
  * @author Rizwan Idrees
  * @author Mohsin Husen
+ * @author Jakub Vavrik
  */
 
 public class TransportClientFactoryBean implements FactoryBean<TransportClient>, InitializingBean, DisposableBean {
@@ -43,9 +44,9 @@ public class TransportClientFactoryBean implements FactoryBean<TransportClient>,
     private String clusterNodes;
     private String clusterName;
     private Boolean clientTransportSniff;
-    private Boolean clientIgnoreClusterName;
+    private Boolean clientIgnoreClusterName = Boolean.FALSE;
-    private String clientPingTimeout;
+    private String clientPingTimeout = "5s";
-    private String clientNodesSamplerInterval;
+    private String clientNodesSamplerInterval = "5s";
     private TransportClient client;
     private Properties properties;
     static final String COLON = ":";

src/main/java/org/springframework/data/elasticsearch/core/MappingBuilder.java

@@ -41,6 +41,7 @@ class MappingBuilder {
     public static final String FIELD_STORE = "store";
     public static final String FIELD_TYPE = "type";
     public static final String FIELD_INDEX = "index";
+    public static final String FIELD_FORMAT = "format";
     public static final String FIELD_SEARCH_ANALYZER = "search_analyzer";
     public static final String FIELD_INDEX_ANALYZER = "index_analyzer";
     public static final String FIELD_PROPERTIES = "properties";
@@ -125,6 +126,10 @@ class MappingBuilder {
         xContentBuilder.field(FIELD_STORE, fieldAnnotation.store());
         if (FieldType.Auto != fieldAnnotation.type()) {
             xContentBuilder.field(FIELD_TYPE, fieldAnnotation.type().name().toLowerCase());
+            if (FieldType.Date == fieldAnnotation.type() && DateFormat.none != fieldAnnotation.format()) {
+                xContentBuilder.field(FIELD_FORMAT, DateFormat.custom == fieldAnnotation.format()
+                        ? fieldAnnotation.pattern() : fieldAnnotation.format());
+            }
         }
         if (FieldIndex.not_analyzed == fieldAnnotation.index()) {
             xContentBuilder.field(FIELD_INDEX, fieldAnnotation.index().name().toLowerCase());

src/test/java/org/springframework/data/elasticsearch/SampleDateMappingEntity.java

@@ -0,0 +1,73 @@
+package org.springframework.data.elasticsearch;
+
+import org.springframework.data.annotation.Id;
+import org.springframework.data.elasticsearch.annotations.DateFormat;
+import org.springframework.data.elasticsearch.annotations.Document;
+import org.springframework.data.elasticsearch.annotations.Field;
+
+import java.util.Date;
+
+import static org.springframework.data.elasticsearch.annotations.FieldIndex.not_analyzed;
+import static org.springframework.data.elasticsearch.annotations.FieldType.String;
+import static org.springframework.data.elasticsearch.annotations.FieldType.Date;
+
+/**
+ * @author Jakub Vavrik
+ */
+@Document(indexName = "test-datemapping", type = "mapping", indexStoreType = "memory", shards = 1, replicas = 0, refreshInterval = "-1")
+public class SampleDateMappingEntity {
+    @Id
+    private String id;
+
+    @Field(type = String, index = not_analyzed, store = true, searchAnalyzer = "standard", indexAnalyzer = "standard")
+    private String message;
+
+    @Field(type = Date, format = DateFormat.custom, pattern = "dd.MM.yyyy hh:mm")
+    private Date customFormatDate;
+
+    @Field(type = Date)
+    private Date defaultFormatDate;
+
+    @Field(type = Date, format = DateFormat.basic_date)
+    private Date basicFormatDate;
+
+    public String getId() {
+        return id;
+    }
+
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public Date getCustomFormatDate() {
+        return customFormatDate;
+    }
+
+    public void setCustomFormatDate(Date customFormatDate) {
+        this.customFormatDate = customFormatDate;
+    }
+
+    public Date getDefaultFormatDate() {
+        return defaultFormatDate;
+    }
+
+    public void setDefaultFormatDate(Date defaultFormatDate) {
+        this.defaultFormatDate = defaultFormatDate;
+    }
+
+    public Date getBasicFormatDate() {
+        return basicFormatDate;
+    }
+
+    public void setBasicFormatDate(Date basicFormatDate) {
+        this.basicFormatDate = basicFormatDate;
+    }
+}

src/test/java/org/springframework/data/elasticsearch/core/SimpleElasticsearchDateMappingTest.java

@@ -0,0 +1,26 @@
+package org.springframework.data.elasticsearch.core;
+
+import org.elasticsearch.common.xcontent.XContentBuilder;
+import org.junit.Assert;
+import org.junit.Test;
+import org.springframework.data.elasticsearch.SampleDateMappingEntity;
+
+import java.beans.IntrospectionException;
+import java.io.IOException;
+
+/**
+ * @author Jakub Vavrik
+ */
+public class SimpleElasticsearchDateMappingTest {
+    private static final String EXPECTED_MAPPING = "{\"mapping\":{\"properties\":{\"message\":{\"store\":true," +
+            "\"type\":\"string\",\"index\":\"not_analyzed\",\"search_analyzer\":\"standard\",\"index_analyzer\"" +
+            ":\"standard\"},\"customFormatDate\":{\"store\":false,\"type\":\"date\",\"format\":\"dd.MM.yyyy hh:mm\"}," +
+            "\"defaultFormatDate\":{\"store\":false,\"type\":\"date\"},\"basicFormatDate\":{\"store\":false,\"" +
+            "type\":\"date\",\"format\":\"basic_date\"}}}}";
+
+    @Test
+    public void testCorrectDateMappings() throws NoSuchFieldException, IntrospectionException, IOException {
+        XContentBuilder xContentBuilder = MappingBuilder.buildMapping(SampleDateMappingEntity.class, "mapping", "id");
+        Assert.assertEquals(EXPECTED_MAPPING, xContentBuilder.string());
+    }
+}