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Bean Path Tools

Gorm-tools comes with BeanPathTools util which provides a convenient way for manipulating with object's properties. See BeanPathTools

Getting specified object's properties to a map

In order to retrieve properties from an object and place them to a map we can use buildMapFromPaths We can possible to specify fields which should be added to the resulting map by providing a list with property names as the second argument.

    User user = new User(firstName: 'John', lastName: 'Doe' age: 30)

    Map userName = BeanPathTools.buildMapFromPaths(user, ['firstName', 'lastName'])
    assert userName == [firstName: 'John', lastName: 'Doe']

Getting nested properties:

It is also works well with nested properties. To get a nested property we need to specify a full path including parent field names divided with the ( . ) sign. See example below:

    Address address = new Address(street1: 'street1', street2: 'street2' zip: '123456', city: 'city')
    User user = new User(firstName: 'John', lastName: 'Doe' age: 30, address: address)

    Map street = BeanPathTools.buildMapFromPaths(user, ['address.street1', 'address.street2'])
    assert street == [address: [street1: 'street1', street2: 'street2']]

    Map fullAddress = BeanPathTools.buildMapFromPaths(user, ['address.*'])
    assert fullAddress == [address: [street1: 'street1', street2: 'street2' zip: '123456', city: 'city']]

Getting all object's properties to a map

in case of a domain instance the method looks only for persistent properties

The ( * ) sign represents all properties. Thus in order to get all fields we can use it as shown below:

    Map userMap = BeanPathTools.buildMapFromPaths(user, ['*'])
    assert userMap == [firstName: 'John', lastName: 'Doe' age: 30]