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JPA Method in javax.persistence.criteria.CriteriaBuilder Expression substring (    Expression  x,     int  from,     int  len ) Create an expression for substring extraction. Extracts a substring of given length starting at the specified position

JPA Annotation Attribute in javax.persistence.Column int length default 255 (Optional) The column length. (Applies only if a string-valued column is used.) Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.Column int precision default 0 (Optional) The precision for a decimal (exact numeric) column. (Applies only if a decimal column is used.) Value must be set by developer if used when generating the DDL for the column. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.Column int scale default 0 (Optional) The scale for a decimal (exact numeric) column. (Applies only if a decimal column is used.) Since: JPA 1.0

to use as a class discriminator. Defaults to DiscriminatorType.STRING . Since: JPA 1.0 int length default

JPA Annotation Attribute in javax.persistence.DiscriminatorColumn int length default 31 (Optional) The column length for String-based discriminator types. Ignored for other discriminator types. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.MapKeyColumn int length default 255 (Optional) The column length. (Applies only if a string-valued column is used.) Since: JPA 2.0

JPA Annotation Attribute in javax.persistence.MapKeyColumn int precision default 0 (Optional) The precision for a decimal (exact numeric) column. (Applies only if a decimal column is used.) Default: 0. (The value must be set by the developer.) Since: JPA 2.0

JPA Annotation Attribute in javax.persistence.MapKeyColumn int scale default 0 (Optional) The scale for a decimal (exact numeric) column. (Applies only if a decimal column is used.) Since: JPA 2.0

JPA Method in javax.persistence.Query int executeUpdate () Execute an update or delete statement. Return: the number of entities updated or deleted Throws: IllegalStateException - if called for a Java Persistence query language SELECT statement or for a criteria query TransactionRequiredException

JPA Method in javax.persistence.Query Query setMaxResults (    int  maxResult ) Set the maximum number of results to retrieve. Parameters: maxResult - maximum number of results to retrieve Return: the same query instance Throws: IllegalArgumentException - if the argument is negative Since: JPA 1.0

JPA Method in javax.persistence.Query int getMaxResults () The maximum number of results the query object was set to retrieve. Returns Integer.MAX_VALUE if setMaxResults was not applied to the query object. Return: maximum number of results Since: JPA 2.0

JPA Method in javax.persistence.Query Query setFirstResult (    int  startPosition ) Set the position of the first result to retrieve. Parameters: startPosition - position of the first result, numbered from 0 Return: the same query instance Throws: IllegalArgumentException - if the argument is negative Since: JPA 1.0

JPA Method in javax.persistence.Query int getFirstResult () The position of the first result the query object was set to retrieve. Returns 0 if setFirstResult was not applied to the query object. Return: position of the first result Since: JPA 2.0 The Running JPA Queries article explains how to use getFirstResult .

JPA Method in javax.persistence.Query Query setParameter (    int  position,    Object value ) Bind an argument value to a positional parameter. Parameters: position - position value - parameter value Return: the same query instance Throws: IllegalArgumentException

JPA Method in javax.persistence.Query Query setParameter (    int  position,    Calendar value,     TemporalType  temporalType ) Bind an instance of java.util.Calendar to a positional parameter. Parameters: position - position value - parameter

JPA Method in javax.persistence.Query Query setParameter (    int  position,    Date value,     TemporalType  temporalType ) Bind an instance of java.util.Date to a positional parameter. Parameters: position - position value - parameter value

JPA Method in javax.persistence.Query Parameter getParameter (    int  position ) Get the parameter object corresponding to the declared positional parameter with the given position. This method is not required to be supported for native queries. Parameters: position - position Return

JPA Method in javax.persistence.Query Parameter getParameter (    int  position,    Class  type ) Get the parameter object corresponding to the declared positional parameter with the given position and type. This method is not required to be supported by

JPA Method in javax.persistence.Query Object getParameterValue (    int  position ) Return the input value bound to the positional parameter. (Note that OUT parameters are unbound.) Parameters: position - position Return: parameter value Throws: IllegalStateException

JPA Annotation Attribute in javax.persistence.SequenceGenerator int initialValue default 1 (Optional) The value from which the sequence object is to start generating. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.SequenceGenerator int allocationSize default 50 (Optional) The amount to increment by when allocating sequence numbers from the sequence. Since: JPA 1.0

JPA Method in javax.persistence.StoredProcedureQuery StoredProcedureQuery setParameter (    int  position,    Object value ) Bind an argument value to a positional parameter. Parameters: position - position value - parameter value Return: the same query instance

JPA Method in javax.persistence.StoredProcedureQuery StoredProcedureQuery setParameter (    int  position,    Calendar value,     TemporalType  temporalType ) Bind an instance of java.util.Calendar to a positional parameter. Parameters: position

JPA Method in javax.persistence.StoredProcedureQuery StoredProcedureQuery setParameter (    int  position,    Date value,     TemporalType  temporalType ) Bind an instance of java.util.Date to a positional parameter. Parameters: position

JPA Method in javax.persistence.StoredProcedureQuery StoredProcedureQuery registerStoredProcedureParameter (    int  position,    Class type,     ParameterMode  mode ) Register a positional parameter. All parameters must be registered

JPA Method in javax.persistence.StoredProcedureQuery Object getOutputParameterValue (    int  position ) Retrieve a value passed back from the procedure through an INOUT or OUT parameter. For portability, all results corresponding to result sets and update counts must be retrieved

JPA Method in javax.persistence.StoredProcedureQuery int executeUpdate () Return the update count of -1 if there is no pending result or if the first result is not an update count. The provider will call execute on the query if needed. Return: the update count or -1 if there is no pending result

JPA Method in javax.persistence.StoredProcedureQuery int getUpdateCount () Return the update count or -1 if there is no pending result or if the next result is not an update count. Return: update count or -1 if there is no pending result or if the next result is not an update count Throws

JPA Annotation Attribute in javax.persistence.TableGenerator int initialValue default 0 (Optional) The initial value to be used to initialize the column that stores the last value generated. Since: JPA 1.0

JPA Annotation Attribute in javax.persistence.TableGenerator int allocationSize default 50 (Optional) The amount to increment by when allocating id numbers from the generator. Since: JPA 1.0

JPA Annotation Transient Target: METHOD, FIELD Implemented Interfaces: Annotation Specifies that the property or field is not persistent. It is used to annotate a property or field of an entity class, mapped superclass, or embeddable class. Example: @Entity public class Employee { @Id int id

JPA Method in javax.persistence.Tuple X get (    int  i,    Class  type ) Get the value of the element at the specified position in the result tuple. The first position is 0. Parameters: i - position in result tuple type - type of the tuple element Return: value

JPA Method in javax.persistence.Tuple Object get (    int  i ) Get the value of the element at the specified position in the result tuple. The first position is 0. Parameters: i - position in result tuple Return: value of the tuple element Throws: IllegalArgumentException - if i exceeds length of result tuple Since: JPA 2.0

JPA Method in javax.persistence.TypedQuery TypedQuery setMaxResults (    int  maxResult ) Set the maximum number of results to retrieve. Parameters: maxResult - maximum number of results to retrieve Return: the same query instance Throws: IllegalArgumentException - if the argument is negative Since: JPA 2.0

JPA Method in javax.persistence.TypedQuery TypedQuery setFirstResult (    int  startPosition ) Set the position of the first result to retrieve. Parameters: startPosition - position of the first result, numbered from 0 Return: the same query instance Throws: IllegalArgumentException - if the argument is negative Since: JPA 2.0

JPA Method in javax.persistence.TypedQuery TypedQuery setParameter (    int  position,    Object value ) Bind an argument value to a positional parameter. Parameters: position - position value - parameter value Return: the same query instance Throws

JPA Method in javax.persistence.TypedQuery TypedQuery setParameter (    int  position,    Calendar value,     TemporalType  temporalType ) Bind an instance of java.util.Calendar to a positional parameter. Parameters: position - position value

JPA Method in javax.persistence.TypedQuery TypedQuery setParameter (    int  position,    Date value,     TemporalType  temporalType ) Bind an instance of java.util.Date to a positional parameter. Parameters: position - position value

"" JDBC Type for this column. Since: JDO 2.1 int length default -1 Maximum length of data stored in this column. Since: JDO 2.1 String name default "" Name of the column. Since: JDO 2.1 int scale

in this fetch plan. Since: JDO 2.1 int fetchSize default 0 The number of instances of multi-valued fields retrieved by queries. Since: JDO 2.1 int maxFetchDepth default 1 The depth of references

- the target class key - the key Since: JDO 1.0 Public Methods int compareTo (Object o ... . Return: the target class name. Inherited from: SingleFieldIdentity Since: JDO 2.0 int hashCode

.0 Public Methods int compareTo (Object o) Determine the ordering of identity objects ... from: SingleFieldIdentity Since: JDO 2.0 int hashCode () Return the cached hash code. Return

key - the key Since: JDO 1.0 Public Methods int compareTo (Object o) Determine the ordering ... class name. Inherited from: SingleFieldIdentity Since: JDO 2.0 int hashCode () Return the cached

: pcClass - the class param - the key Since: JDO 1.0 Public Methods int compareTo (Object o ... class name. Return: the target class name. Inherited from: SingleFieldIdentity Since: JDO 2.0 int

- the class key - the key Since: JDO 1.0 Public Methods int compareTo (Object o) Determine ... : the target class name. Inherited from: SingleFieldIdentity Since: JDO 2.0 int hashCode () Return

: pcClass - the class key - the key Since: JDO 1.0 Public Methods int compareTo (Object o) Determine ... . Return: the target class name. Inherited from: SingleFieldIdentity Since: JDO 2.0 int hashCode

for each key field in the ObjectId. For example, an ObjectId class that has three key fields ( int id ... that has three key fields ( int id , String name , and Float salary ) would have the method generated

JDO Method in javax.jdo.spi.StateManager void providedIntField (   PersistenceCapable pc,     int  field,     int  currentValue ) The value of the field requested to be provided to the StateManager . Parameters: pc - the calling PersistenceCapable

JDO Method in javax.jdo.spi.StateManager int replacingIntField (   PersistenceCapable pc,     int  field ) The replacement value of the field in the calling instance. Parameters: pc - the calling PersistenceCapable instance field - the field number Return: the new value for the field Since: JDO 1.0