optimize db list.size() cases

Signed-off-by: Abhishek Kumar <abhishek.mrt22@gmail.com>

engine/schema/src/main/java/com/cloud/dc/dao/DataCenterIpAddressDaoImpl.java

@@ -296,8 +296,7 @@ public class DataCenterIpAddressDaoImpl extends GenericDaoBase<DataCenterIpAddre
         sc.addAnd("podId", SearchCriteria.Op.EQ, podId);
         sc.addAnd("dataCenterId", SearchCriteria.Op.EQ, dcId);
 
-        List<DataCenterIpAddressVO> result = listBy(sc);
-        return result.size();
+        return getCount(sc);
     }
 
     public DataCenterIpAddressDaoImpl() {

engine/schema/src/main/java/com/cloud/dc/dao/DataCenterVnetDaoImpl.java

@@ -81,7 +81,7 @@ public class DataCenterVnetDaoImpl extends GenericDaoBase<DataCenterVnetVO, Long
     public int countAllocatedVnets(long physicalNetworkId) {
         SearchCriteria<DataCenterVnetVO> sc = DcSearchAllocated.create();
         sc.setParameters("physicalNetworkId", physicalNetworkId);
-        return listBy(sc).size();
+        return getCount(sc);
     }
 
     @Override

engine/schema/src/main/java/com/cloud/network/dao/IPAddressDaoImpl.java

@@ -418,7 +418,7 @@ public class IPAddressDaoImpl extends GenericDaoBase<IPAddressVO, Long> implemen
     public long countFreeIpsInVlan(long vlanDbId) {
         SearchCriteria<IPAddressVO> sc = VlanDbIdSearchUnallocated.create();
         sc.setParameters("vlanDbId", vlanDbId);
-        return listBy(sc).size();
+        return getCount(sc);
     }
 
     @Override

engine/schema/src/main/java/com/cloud/network/dao/NetworkDaoImpl.java

@@ -415,8 +415,7 @@ public class NetworkDaoImpl extends GenericDaoBase<NetworkVO, Long>implements Ne
         sc.setParameters("broadcastUri", broadcastURI);
         sc.setParameters("guestType", guestTypes);
         sc.setJoinParameters("persistent", "persistent", isPersistent);
-        List<NetworkVO> persistentNetworks = search(sc, null);
-        return persistentNetworks.size();
+        return getCount(sc);
     }
 
     @Override

engine/schema/src/main/java/com/cloud/secstorage/CommandExecLogDaoImpl.java

@@ -55,8 +55,7 @@ public class CommandExecLogDaoImpl extends GenericDaoBase<CommandExecLogVO, Long
         SearchCriteria<CommandExecLogVO> sc = CommandSearch.create();
         sc.setParameters("host_id", id);
         sc.setParameters("command_name", "CopyCommand");
-        List<CommandExecLogVO> copyCmds = customSearch(sc, null);
-        return copyCmds.size();
+        return getCount(sc);
     }
 
     @Override

engine/schema/src/main/java/com/cloud/vm/dao/NicIpAliasDaoImpl.java

@@ -170,8 +170,7 @@ public class NicIpAliasDaoImpl extends GenericDaoBase<NicIpAliasVO, Long> implem
     public Integer countAliasIps(long id) {
         SearchCriteria<NicIpAliasVO> sc = AllFieldsSearch.create();
         sc.setParameters("instanceId", id);
-        List<NicIpAliasVO> list = listBy(sc);
-        return list.size();
+        return getCount(sc);
     }
 
     @Override