diff --git a/modules/core/src/main/java/org/springside/modules/persistence/DynamicSpecifications.java b/modules/core/src/main/java/org/springside/modules/persistence/DynamicSpecifications.java
index 9b2d5071..2ec528c7 100644
--- a/modules/core/src/main/java/org/springside/modules/persistence/DynamicSpecifications.java
+++ b/modules/core/src/main/java/org/springside/modules/persistence/DynamicSpecifications.java
@@ -16,7 +16,8 @@ import org.springside.modules.utils.Collections3;
 import com.google.common.collect.Lists;
 
 public class DynamicSpecifications {
-	public static <T> Specification<T> bySearchFilter(final Collection<SearchFilter> filters, final Class<T> clazz) {
+
+	public static <T> Specification<T> bySearchFilter(final Collection<SearchFilter> filters, final Class<T> entityClazz) {
 		return new Specification<T>() {
 			@Override
 			public Predicate toPredicate(Root<T> root, CriteriaQuery<?> query, CriteriaBuilder builder) {
diff --git a/modules/core/src/main/java/org/springside/modules/persistence/Hibernates.java b/modules/core/src/main/java/org/springside/modules/persistence/Hibernates.java
index 911cf45c..8c514d72 100644
--- a/modules/core/src/main/java/org/springside/modules/persistence/Hibernates.java
+++ b/modules/core/src/main/java/org/springside/modules/persistence/Hibernates.java
@@ -10,13 +10,14 @@ import org.hibernate.Hibernate;
 import org.hibernate.dialect.H2Dialect;
 import org.hibernate.dialect.MySQL5InnoDBDialect;
 import org.hibernate.dialect.Oracle10gDialect;
+import org.hibernate.dialect.PostgreSQL82Dialect;
+import org.hibernate.dialect.SQLServer2008Dialect;
 
 public class Hibernates {
 	/**
 	 * Initialize the lazy property value.
 	 * 
-	 * eg.
-	 * Hibernates.initLazyProperty(user.getGroups());
+	 * e.g. Hibernates.initLazyProperty(user.getGroups());
 	 */
 	public static void initLazyProperty(Object proxyedPropertyValue) {
 		Hibernate.initialize(proxyedPropertyValue);
@@ -24,7 +25,7 @@ public class Hibernates {
 
 	/**
 	 * 从DataSoure中取出connection, 根据connection的metadata中的jdbcUrl判断Dialect类型.
-	 * 仅支持Oracle, H2, MySql，如需更多数据库类型，请仿照此类自行编写。
+	 * 仅支持Oracle, H2, MySql, PostgreSql, SQLServer，如需更多数据库类型，请仿照此类自行编写。
 	 */
 	public static String getDialect(DataSource dataSource) {
 		String jdbcUrl = getJdbcUrlFromDataSource(dataSource);
@@ -36,6 +37,10 @@ public class Hibernates {
 			return MySQL5InnoDBDialect.class.getName();
 		} else if (StringUtils.contains(jdbcUrl, ":oracle:")) {
 			return Oracle10gDialect.class.getName();
+		} else if (StringUtils.contains(jdbcUrl, ":postgresql:")) {
+			return PostgreSQL82Dialect.class.getName();
+		} else if (StringUtils.contains(jdbcUrl, ":sqlserver:")) {
+			return SQLServer2008Dialect.class.getName();
 		} else {
 			throw new IllegalArgumentException("Unknown Database of " + jdbcUrl);
 		}