Specifications | |
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JDO Specification version implemented | 1.0.1 (+ some 2.0 features) |
JDBC Driver Version Required | >= 1.x |
PersistenceCapable | |
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Abstract class support | Yes |
Inheritance | Yes |
Transactional-transient fields | Yes |
Persistent-nontransactional objects | Yes |
Retain values | Yes |
Collections | Yes |
Arrays | byte[] only |
Map Support | Yes |
Class Enhancement | |
Persistence Aware classes | Yes |
Persistence Capable classes | Yes |
Serialization and cloning support | Yes |
Query | |
Promotion of numeric operands for comparison | Yes |
Literal values | Yes |
Primitive and Wrapper types | Yes |
Filter operators (==, !=, <, >, <=, >=, &&, ||, ^) | Yes |
Object comparisons | Yes |
Arithmetic operators | Yes |
Casting | Yes |
Ordering | Yes |
Precedence scoping in filters ( ..(..)..) | Yes |
Equality and ordering comparison of date fields | Yes |
String methods: startsWith(), endsWith() | Yes |
Collection methods: contains(), isEmpty() | Yes |
Navigation through null valued fields | Yes |
Parameters | Yes |
Variables | Yes |
PersistenceManager | |
Object Life Cycle Management | Yes |
Data store object identity | Yes |
Local transactions | Yes |
makeTransactional() | Yes |
makeTransient() | Yes |
makeNontransactional() | Yes |
evict() | Yes |
refresh() | Yes |
retrieve() | Yes |
Soft cache strategy | Yes |
Application object identity | No |
Second Class PersistenceCapable objects | No |
Alternate query language | Yes |
Nontransactional reads | Yes |
Nontransactional writes | No |
Retaining values after transaction commit | Yes |
Optimistic transactions | No |
XA/Open distributed transactions | No |
Transactional transient Objects | Yes |
Application Server Integration | No |
Additional methods in queries | Yes |
Query.setResult(): Query projection, aggregation | Yes |
Query.setResultClass(): Query result objects | Yes |
Query.setGrouping(): Query result grouping | Yes |
Query.setUnique(): Unique query result | Yes |
Generate schema | Yes |
Map to pre-existing schema | No |
Auto-create tables | Yes |
Auto-validate tables | Yes |
Map to views | Yes |
Support one-to-one mappings | Yes |
Support one-to-many mappings | Yes |
Support many-to-many mappings | Yes |
Support one-to-many map mappings | Yes |
Support many-to-many map mappings | Yes |
Support serialized mappings | No |