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OPENJPA-1548: Refactored ClassMetaData and cached hashCode() to improve performance.

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git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@918167 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Richard G. Curtis 2010-03-02 20:04:42 +00:00
parent 3aea82e40c
commit a515a71fec
1 changed files with 16 additions and 10 deletions
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26
openjpa-kernel/src/main/java/org/apache/openjpa/meta/ClassMetaData.java
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@ -152,6 +152,7 @@ public class ClassMetaData
private int _resMode = MODE_NONE;
private Class<?> _type = Object.class;
private int _hashCode = Object.class.getName().hashCode();
private final Map<String,FieldMetaData> _fieldMap = new TreeMap<String,FieldMetaData>();
private Map<String,FieldMetaData> _supFieldMap = null;
private boolean _defSupFields = false;
@ -265,6 +266,7 @@ public class ClassMetaData
(type.getSuperclass().getName()))
throw new MetaDataException(_loc.get("enum", type));
_type = type;
_hashCode = _type.getName().hashCode();
if (PersistenceCapable.class.isAssignableFrom(type))
setIntercepting(true);
}
@ -1116,14 +1118,15 @@ public class ClassMetaData
* Return the version field for this class, if any.
*/
public FieldMetaData getVersionField() {
if (_allFields == null) {
getFields();
}
if (_versionIdx == Integer.MIN_VALUE) {
FieldMetaData[] fields = getFields();
int idx = -1;
for (int i = 0; i < fields.length; i++) {
if (fields[i].isVersion()) {
for (int i = 0; i < _allFields.length; i++) {
if (_allFields[i].isVersion()) {
if (idx != -1)
throw new MetaDataException(_loc.get
("mult-vers-fields", this, fields[idx], fields[i]));
throw new MetaDataException(_loc.get("mult-vers-fields", this, _allFields[idx], _allFields[i]));
idx = i;
}
}
@ -1131,7 +1134,8 @@ public class ClassMetaData
}
if (_versionIdx == -1)
return null;
return getFields()[_versionIdx];
return _allFields[_versionIdx];
}
/**
@ -1141,10 +1145,12 @@ public class ClassMetaData
* @return the field's metadata, or null if not found
*/
public FieldMetaData getField(int index) {
FieldMetaData[] fields = getFields();
if (index < 0 || index >= fields.length)
if(_allFields == null){
getFields();
}
if (index < 0 || index >= _allFields.length)
return null;
return fields[index];
return _allFields[index];
}
/**
@ -1646,7 +1652,7 @@ public class ClassMetaData
}
public int hashCode() {
return _type.getName().hashCode();
return _hashCode;
}
public boolean equals(Object other) {