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20

Database size is much larger than expected (x2)

>) <sUrl>::=String <cMark>::=char <iSize>::=int <baBody>::=byte[] <id>::=@ID So simple a class ... ") @DiscriminatorValue(value="71") class Uris { public Uris() { } byte[] baURI; char cMark; @Override public ... () {   return baURI; } public char getcMark() {   return cMark; } public int getId() {   return id
20

Problem with polish characters

="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%> i have polish chars in database (when i put in database some strings with polish chars and get them and show in .jsp there are polish chars) But in this way I'm unnable to write polisch chars just on the site. When I use ISO-8859-2 or UTF-8
16

Searching lists within objects

()) with char literal ('5') ObjectDB considers the literal as character rather than as a string. Only in comparison of a string and a char the char is converted into string. A possible workaround
5

like(x, pattern, escapeChar)

Method javax.persistence.criteria.CriteriaBuilder Predicate like( Expression<String> x, String pattern, char escapeChar ) Create a predicate for testing whether the expression satisfies the given pattern. Parameters: x - string expression pattern - string escapeChar - escape character Returns: like predicate Since: JPA 2.0
5

notLike(x, pattern, escapeChar)

Method javax.persistence.criteria.CriteriaBuilder Predicate notLike( Expression<String> x, String pattern, char escapeChar ) Create a predicate for testing whether the expression does not satisfy the given pattern. Parameters: x - string expression pattern - string escapeChar - escape character Returns: not-like predicate Since: JPA 2.0
5

like(x, pattern, escapeChar)

Method javax.persistence.criteria.CriteriaBuilder Predicate like( Expression<T> x, Expression<T> pattern, char escapeChar ) Create a predicate for testing whether the expression satisfies the given pattern. Parameters: x - string expression pattern - string expression escapeChar - escape character Returns: like predicate Since: JPA 2.0
5

like(x, pattern, escapeChar)

Method javax.persistence.criteria.CriteriaBuilder Predicate like( Expression<String> x, Expression<String> pattern, char escapeChar ) Create a predicate for testing whether the expression satisfies the given pattern. Parameters: x - string expression pattern - string expression escapeChar - escape character Returns: like predicate Since: JPA 2.0
5

notLike(x, pattern, escapeChar)

Method javax.persistence.criteria.CriteriaBuilder Predicate notLike( Expression<T> x, Expression<T> pattern, char escapeChar ) Create a predicate for testing whether the expression does not satisfy the given pattern. Parameters: x - string expression pattern - string expression escapeChar - escape character Returns: not-like predicate Since: JPA 2.0
0

providedCharField(pc, field, currentValue)

Method javax.jdo.spi.StateManager void providedCharField( PersistenceCapable pc, int field, char currentValue ) The value of the field requested to be provided to the StateManager. Parameters: pc - the calling PersistenceCapable instance field - the field number currentValue - the current value of the field Since: JDO 1.0
0

CharIdentity(pcClass, key)

Constructor javax.jdo.identity.CharIdentity CharIdentity( Class pcClass, char key ) Constructor with class and key. Parameters: pcClass - the target class key - the key Since: JDO 1.0

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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