123 | Question about overriding default equals and hashcodeHello Support, I have overrided equals and hashcode method in my entities beans. I don't know ... equals and hashCode of entity classes. They could be used, however, if specified explicitly in a query ... like that : org.jvnet.jaxb2_commons.lang.Equals% org.jvnet.jaxb2_commons.lang.HashCode% org |
32 | General Performance Issues Illustrated with a Specific Method<ClientBasicData> cs = new ArrayList<>(); if (ids == null || ids.trim().equals ... != null ? id.hashCode() : 0); return hash; } @Override public boolean equals ... ) || (this.id != null && !this.id.equals(other.id))) { return false; } return |
23 | Different behavior for two equal queriesHi, I've got two equal queries though they behave differently: SELECT FROM com.quasado.foundation.communication.contact.individual.IndividualContact $1 WHERE (($1.organisation.name LIKE '%Q%')) This correctly returns one entry from my database SELECT FROM com.quasado.foundation.communication |
19 | JPA Criteria API Queries operations. String based JPQL queries and JPA criteria based queries are equally powerful and efficient ... expressions (equal, notEqual, gt, ge, lt, le, between, isNull, ...) Logical expressions (and, or, not |
14 | JPA Query Expressions (JPQL / Criteria), isMember, isNotMember, size). Comparison expressions (equal, notEqual, gt, ge, lt, le, between, isNull, ...) Logical expressions (and, or, not, isTrue). |
14 | Query Parameters in JPA whose name field value is equal to :name, which is a parameter that serves as a placeholder |
14 | CRUD Database Operations with JPA all the Pointobjects whose x coordinate is greater or equal to 100 are deleted. All the other Pointobjects |
1 | [ODB1] Chapter 7 - JDOQL Queries operators act in JDOQL as in Java, with a few exceptions: Equality operators (==, !=) compare the identity of instances of user persistent classes (as in Java), but use the equals(...) method |
1 | javax.jdo.FetchGroup is unmodifiable Since: JDO 2.2 boolean equals(Object other) Return whether this instance is equal to the other. Return whether this instance is equal to the other. The equals method must compare the class for identity and the fetch group name for equality. Parameters: other - Returns |
0 | javax.jdo.Query hides the name of a candidate class field if equal. Variable names must be unique and must not ... the Java language, except for these differences: Equality and ordering comparisons between primitives and instances of wrapper classes are valid. Equality and ordering comparisons of Date fields and Date |
