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== findAll



=== Purpose


Finds all of domain class instances matching the specified query


=== Examples


[source,groovy]
----
// everything
Book.findAll()

// with a positional parameter
Book.findAll("from Book as b where b.author=?", ['Dan Brown'])

// 10 books from Dan Brown staring from 5th book ordered by release date
Book.findAll("from Book as b where b.author=? order by b.releaseDate",
             ['Dan Brown'], [max: 10, offset: 5])

// examples with max/offset usage
def query = "from Book as b where b.author='Dan Brown' order by b.releaseDate"

// first 10 books
Book.findAll(query, [max: 10])

// 10 books starting from 5th
Book.findAll(query, [max: 10, offset: 5])

// examples with named parameters
Book.findAll("from Book as b where b.author=:author",
             [author: 'Dan Brown'])
Book.findAll("from Book as b where b.author=:author",
             [author: 'Dan Brown'], [max: 10, offset: 5])
Book.findAll("from Book as b where b.author in (:authors)",
             [authors: ['Dan Brown', 'Jack London']])

// examples with tables join
Book.findAll("from Book as b where not exists " +
                "(from Borrow as br where br.book = b)")

// query by example
def example = new Book(author: "Dan Brown")
Book.findAll(example)

// Use where criteria (since Grails 2.0)
def results = Person.findAll {
     lastName == "Simpson"
}
def results = Person.findAll(sort:"firstName") {
     lastName == "Simpson"
}
----


=== Description


The `findAll` method allows querying with Hibernate's query language  link:{hibernate5GuideFromRef}index.html#hql[HQL] and querying by example, returning all matching instances. Pagination can be controlled using the `max` and `offset` parameters:

[source,groovy]
----
Book.findAll("from Book as b where b.author=:author",
             [author: 'Dan Brown'], [max: 10, offset: 5])
----

The `findAll` method supports the 2nd level cache:

[source,groovy]
----
Book.findAll("from Book as b where b.author=:author",
             [author:'Dan Brown'], [max: 10, offset: 5, cache: true])
----

The basic syntax for the method is:

[source,groovy]
----
Book.findAll()
Book.findAll(String query)
Book.findAll(String query, Collection positionalParams)
Book.findAll(String query, Collection positionalParams, Map queryParams)
Book.findAll(String query, Map namedParams)
Book.findAll(String query, Map namedParams, Map queryParams)
Book.findAll(Book example)
Book.findAll(Closure whereCriteria)
Book.findAll(Map queryParams, Closure whereCriteria)
----

NOTE: If you have a join in your HQL, the method will return a `List` of `Array`s containing domain class instances. You may wish to use link:executeQuery.html[executeQuery] in this case so you have more flexibility in specifying what gets returned.

Parameters:

* `query` - An HQL query
* `positionalParams` - A `List` of parameters for a positional parametrized HQL query
* `namedParams` - A `Map` of named parameters a HQL query
* `queryParams` - A `Map` containing parameters 'max', and/or 'offset' and/or 'cache'
* `example` - An instance of the domain class for query by example
* `readOnly` - `true` if returned objects should not be automatically dirty-checked (simlar to `read()`)
* `fetchSize` - number of rows fetched by the underlying JDBC driver per round trip
* `flushMode` - Hibernate `FlushMode` override, defaults to `FlushMode.AUTO`
* `timeout` - query timeout in seconds
