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@ElementCollection of type enum

@ElementCollection of type enum
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Not Enhanced: ...: com.objectdb.o.TEX: Type ..._$$_javassist_1 is not found

Not Enhanced: ...: com.objectdb.o.TEX: Type ..._$$_javassist_1 is not found
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Add Type level permissions to ObjectDB Server

Add Type level permissions to ObjectDB Server
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javax.persistence.PersistenceException Attempt to store an instance of a non persistable type java.net.URL

javax.persistence.PersistenceException Attempt to store an instance of a non persistable type java.net.URL
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Numbers in JPQL and Criteria Queries

numeric promotion principles. For example, the resulting type of a binary arithmetic operation on an int ... an argument a numeric value of any type and returns a value of the same type. The MOD Function The MOD ... 8 twice with a remainder of 0) The MOD function takes two integer values of any type and returns
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Database Explorer

objects. The [Schema] window shows the user defined persistable types (entity and embeddable classes) in ... provides two types of viewer windows for viewing the database data. The Table window follows ... a single database object. This type of viewer is useful for viewing data of a simple object model. In
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Comparison in JPQL and Criteria API

) expressions: c.president == null c.president != null Comparable Data Types Comparison is supported for values of the following data types: Values of numeric types, including primitive types (byte, short, char, int, long, float, double), wrapper types (Byte, Short, Character, Integer, Long, Float
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javax.persistence.criteria.SetJoin

interface is the type of the result of joining to a collection over an association or element ... : selection item Since: JPA 2.0 Expression<X> as(Class<X> type) Perform a typecast upon the expression ... expression object. This method does not cause type conversion: the runtime type is not changed. Warning
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javax.persistence.criteria.ListJoin

interface is the type of the result of joining to a collection over an association or element ... : selection item Since: JPA 2.0 Expression<X> as(Class<X> type) Perform a typecast ... expression object. This method does not cause type conversion: the runtime type is not changed. Warning
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[ODB1] Chapter 9 - ObjectDB Explorer

Windows The Explorer provides two types of viewer windows for exploring the contents of database ... . This type of viewer is useful for viewing the data of a simple object model. In most cases ... " menu commands (or using the equivalent toolbar buttons). This opens the specified viewer window type

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

Need Help?

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