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49

Attribute.PersistentAttributeType.ONE_TO_MANY

Enum Constant javax.persistence.metamodel.Attribute.PersistentAttributeType ONE_TO_MANY One-to-many association Since: JPA 2.0
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values()

Static Method javax.persistence.metamodel.Attribute.PersistentAttributeType PersistentAttributeType[] values() Returns an array containing the constants of this enum type. This method may be used to iterate over the constants as follows: for (PersistentAttributeType c : PersistentAttributeType
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valueOf(name)

Static Method javax.persistence.metamodel.Attribute.PersistentAttributeType PersistentAttributeType valueOf( String name ) Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. Parameters: name
46

JPA Metamodel API

for exploring managed fields and properties (which are referred to as attributes). For example: // Get all the attributes - including inherited: Set<Attribute> attributes1 = managedType.getAttributes(); // Get all the attributes - excluding inherited: Set<Attribute> attributes2 = managedType
40

Database Management Settings

and page size settings: The initial attribute specifies the initial size of every new database file. The resize attribute specifies the size by which to extend the database file when additional space ... ). The page attribute specifies the size of a page in a database file. The default 2KB is appropriate
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javax.persistence.metamodel.EntityType

Attribute<?,?> getAttribute(String name) Return the attribute of the managed type that corresponds to the specified name. Return the attribute of the managed type that corresponds to the specified name. Parameters: name - the name of the represented attribute Returns: attribute with given name
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javax.persistence.metamodel.MappedSuperclassType

types. Since: JPA 2.0 Attribute<?,?> getAttribute(String name) Return the attribute of the managed type that corresponds to the specified name. Return the attribute of the managed type that corresponds to the specified name. Parameters: name - the name of the represented attribute Returns: attribute
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javax.persistence.metamodel.IdentifiableType

entity or mapped superclass types. Since: JPA 2.0 Attribute<?,?> getAttribute(String name) Return the attribute of the managed type that corresponds to the specified name. Return the attribute ... attribute Returns: attribute with given name Throws: IllegalArgumentException - if attribute
4

[ODB1] Chapter 8 - ObjectDB Server

max="10" user-max="10" timeout="300" /> </server> All attributes and sub elements shown in the above <server> element are required. The port attribute specifies the TPC port on which the server ... . The reload attribute specifies how often (in seconds) the server checks the configuration file for changes
4

[ODB1] Chapter 4 - JDO Metadata

have a required name attribute. The metadata above defines class A (in the default package) and classes B, C and D (in package test), as persistent. In addition to the required name attribute, a <class> element can have one or more of the following optional attributes: persistence-capable-superclass

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.

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