I have a simple Tag class with only two fields, name and value,
class Tag {
String name
String value
}
and I'm trying to render an XML where I want to search for parts of both parameters via findBy...Ilike().
def getXml = {
render Tag.findAllByNameAndValueIlike("%${params.name}%", "%${params.value}%") as XML
}
But this doesn't give my any results. If I use only one parameter, it works as I expect:
def getXml = {
render Tag.findAllByNameIlike("%${params.name}%") as XML
}
My next question is probably going to be about filtering the results, and adding other "similar" tags to the returns list, so is there a way to solve the above with something like:
def getXml = {
list = Tag.findAllByNameIlike("%${params.name}%")
list.add(Some other stuff)
list.sortBy(Some thing, maby name length)
}
For your multiple-field ilike query you can use withCriteria:
def result = Tag.withCriteria {
ilike('name', "%${params.name}%")
ilike('value', "%${params.value}%")
}
This will return a list of Tag domains whose name matches the provided name and value matches the provided value.
The Criteria DSL will probably let you do most of the filtering you need, but you can also consider using some of the Groovy collection examples here.
You have to put the restrictions(InList, NotNull, etc) on each field of a dynamic finder. If you do not, it assumes equals. Here is what you were looking for:
Tag.findAllByNameIlikeAndValueIlike("%${params.name}%", "%${params.value}%")
Both answer are good. I tried both, but I have to say I like the withcCritia the best. It seems very flexibly.
def result = Tag.withCriteria {
if(params.name != null)
ilike('name', "%${params.name}%")
if(params.value != null)
ilike('value', "%${params.value}%")
}
result.add(new Tag('name': "something"))
render result as XML
Related
I have a domain class
class Url {
UUID id
String url
static hasMany = [
indications:UrlIndication
]
...
}
And
class UrlIndication {
UUID id
String name
static belongsTo = Url
...
}
I want to choose urls so that it has all the necessary UrlIndication elements in a given list indicationsId.
For that I use an association and criteria like this one:
indications {
and {
indicationsId.each{
indication->
eq ('id',UUID.fromString(indication as String))
}
}
}
However, all I got is an empty result. Can you suggest any modifications/ other methods so that I can do this? Thanks in advance
Your query returned an empty list because it's the equivalent of the expression (pseudo-code): if 1 = 1 and 1 = 2 and 1 = 3
Such an expression would always be false. in or inList would not work for the reason #innovatism described.
In theory, Criteria's eqAll() or HQL's = ALL would work. But, I don't know for sure because I could not get either one to work.
What will work is to use inList to return a subset of Urls: those which contain at least one of the UrlIndication IDs. Then use Groovy's containsAll() to finish the job.
def ids = indicationsId.collect { UUID.fromString(it as String) }
Url.createCriteria()
.buildCriteria {
indications {
inList 'id', ids
}
}
.setResultTransformer(org.hibernate.Criteria.DISTINCT_ROOT_ENTITY)
.list()
.findAll {
it.indications.id.containsAll(ids)
}
Since the query has the potential to return duplicate Url instances, the ResultTransformer is set to return a unique list.
Finally, findAll() is used along with containsAll() to filter the list further.
Using eqAll (maybe)
Something like the following might work. Something funky is going on with Grails' HibernateCriteriaBuilder that causes the eqAll method to look up properties in the root entity; completely ignoring the sub criteria. So the following uses Hibernate directly. It didn't work for me, but it's as close as I could get. And it gave me a head-ache!
Url.createCriteria().buildCriteria {}
.createCriteria('indications', 'i')
.add(org.hibernate.criterion.Property.forName('i.id').eqAll(org.hibernate.criterion.DetachedCriteria.forClass(UrlIndication)
.add(org.hibernate.criterion.Restrictions.in('id', ids))
.setProjection(org.hibernate.criterion.Property.forName('id'))
))
.setResultTransformer(org.hibernate.Criteria.DISTINCT_ROOT_ENTITY)
.list()
The problem I had is I could not get Restrictions.in to work. Restrictions.eq works fine.
the in clause should do:
indications {
'in' 'id', indicationsId.collect{ UUID.fromString indication.toString() }
}
New to groovy, grails.
I have the following query where I want to match a few paramater exactly to as passed(eq), but for one, which I want to using a 'like'
if (params.ret_code) {
ret_cod = params.ret_code+"%"
}
def srchresults = DmnObj.where {
if (params.doc_num) { doc_num == params.doc_num.trim() } //works as expected
//How do I do this????
if (params.retn_code) { retn_code like ret_cod }
}
Tried this, but in-vain.
how do I set retn_code with a like?
Thank you!
This is how you can do this
// case sensitive like
def result = Domain.where {
fieldName ==~ "value"
}
// case insensitive like
def result = Domain.where {
fieldName =~ "value"
}
Remember to prefix, suffix or both the value with %. For more about where queries https://grails.github.io/grails-doc/latest/guide/GORM.html#whereQueries
You can do like this:
var feel []DB.Feelings
db.Where("column_name LIKE ?", "%"+yourText+"%").Limit(your_limit).Offset(your_offset).Find(&feel)
column_name is your column name
Limit and Offset are not required
You can do like this:
def result = DomainClass.where{
like('fieldName', '%'+myVariable+'%')
}
I suggest you have a look at the Grails documentation (section Domain Class Usage): you will find several interesting ways to filter your domain class objects as for example HQL queries or findAllBy* dynamic methods.
I have a query that bring back a cell in my table the has all xml in it. I have it so I can spit out what is in the cell without any delimiters. Now i need to actually take each individual element and link them with my object. Is there any easy way to do this?
def sql
def dataSource
static transactional = true
def pullLogs(String username, String id) {
if(username != null && id != null) {
sql = new Sql(dataSource)
println "Data source is: " + dataSource.toString()
def schema = dataSource.properties.defaultSchema
sql.query('select USERID, AUDIT_DETAILS from DEV.AUDIT_LOG T WHERE XMLEXISTS(\'\$s/*/user[id=\"' + id + '\" or username=\"'+username+'\"]\' passing T.AUDIT_DETAILS as \"s\") ORDER BY AUDIT_EVENT', []) { ResultSet rs ->
while (rs.next()) {
def auditDetails = new XmlSlurper().parseText(rs.getString('AUDIT_EVENT_DETAILS'))
println auditDetails.toString
}
}
sql.close()
}
}
now this will give me that cell with those audit details in it. Bad thing is that is just puts all the information from the field in on giant string without the element tags. How would I go through and assign the values to a object. I have been trying to work with this example http://gallemore.blogspot.com/2008/04/groovy-xmlslurper.html with no luck since that works with a file.
I have to be missing something. I tried running another parseText(auditDetails) but haven't had any luck on that.
Any suggestions?
EDIT:
The xml int that field looks like
<user><username>scottsmith</username><timestamp>tues 5th 2009</timestamp></user>
^ simular to how it is except mine is ALOT longer. It comes out as "scottsmithtue 5th 2009" so on and so forth. I need to actually take those tags and link them to my object instead of just printing them in one conjoined string.
Just do
auditDetails.username
Or
auditDetails.timestamp
To access the properties you require
When using projection on the properties, the result is returned as the list with the elements in the same sequence as that defined in the projections block. At the same time the property names are missing from the list and that is really disadvantageous to the developer as the result would be passed along and the caller needs to know what value belongs to which property. Is there a way to return a map from the Criteria query with property name as the key to the value?
so, the following code:
def c = Trade.createCriteria()
def remicTrades = c.list {
projections {
property('title', 'title')
property('author.name', 'author')
}
def now = new Date()
between('publishedDate', now-365, now)
}
This returns:
[['book1', 'author1']['book2', 'author2']]
Instead I would like it to return:
[[book:'book1', author:'author1'][book:'book2', author:'author2']]
I know I can arrange this way after getting the result but I earnestly feel that the property alias should have been used by the criteria to return a list of map that mimics the result of the SQL query and not a bland list.
Duplicate: Grails queries with criteria: how to get back a map with column?
And the corresponding answer (and solution): https://stackoverflow.com/a/16409512/1263227
Use resultTransformer.
import org.hibernate.criterion.CriteriaSpecification
Trade.withCriteria {
resultTransformer(CriteriaSpecification.ALIAS_TO_ENTITY_MAP)
projections {
property('title', 'title')
property('author.name', 'author')
}
def now = new Date()
between('publishedDate', now-365, now)
}
Agree with your question reasoning, this really should be part of the core GORM solution. That said, here's my workaround;
def props = ['name','phone']
def query = Person.where {}.projections {
props.each{
property(it)
}
}
def people = query.list().collect{ row->
def cols = [:]
row.eachWithIndex{colVal, ind->
cols[props[ind]] = colVal
}
cols
}
println people // shows [['name':'John','phone':'5551212'],['name':'Magdalena','phone':'5552423']]
I have two very similar methods in Grails, something like "calculate statistics by os" and "calculate statistics by browser" - effectively both prepare some things, then run a similar query on the DB, then do things with the results. The only part where the methods differ is the query they run in the middle of my method -
def summary = c.list {
eq('browser', Browser.get(1)) // OR eq('os', OS.get(1))
between('date', dates.start, dates.end)
}
It occurred to me that the ideal way to refactor it would be to pass in the first line of the closure as a method parameter. Like
doStats (Closure query) {
...
def summary = c.list {
query
between('date', dates.start, dates.end)
}
}
I tried this but "query" gets ignored. I tried query() instead but then the query clause is executed where defined, so this doesn't work either. I suppose I could just pass the whole closure as a parameter but that seems wrong - the query might also get more complicated in future.
Anyone have any better ideas?
I found leftShift operator useful for composing closure from two separate ones. What you can do is:
Closure a = { /*...*/ }
Closure b = { /*...*/ }
Closure c = a << b
Take a look at this example:
def criteria = {
projection Projections.distinct(Projections.property('id'))
and {
eq 'owner.id', userDetails.id
if (filter.groupId) {
eq 'group.id', filter.groupId
}
}
}
List<Long> ids = Contact.createCriteria().list(criteria << {
maxResults filter.max
firstResult filter.offset
})
Integer totalCount = Contact.createCriteria().count(criteria)
What you can see here is that I'm creating a criteria for listing ant counting GORM objects. Criterias for both cases are almost the same, but for listing purposes I also need to include limit and offset from command object.
You're using the criteria DSL which might be different than plain groovy closures.
To do what you're asking, you can use the method described here -
http://mrhaki.blogspot.com/2010/06/grails-goodness-refactoring-criteria.html
and put your query in to private method.
The more elegant solution for this is to use named queries in grails -
http://grails.org/doc/latest/ref/Domain%20Classes/namedQueries.html
Look at the
recentPublicationsWithBookInTitle {
// calls to other named queries…
recentPublications()
publicationsWithBookInTitle()
}
example -
Not sure about with the Grails Criteria builder, but with other builders, you can do something like:
doStats (Closure query) {
def summary = c.list {
query( it )
between('date', dates.start, dates.end)
}
}
And call this via:
def f = { criteria ->
criteria.eq( 'browser', Browser.get( 1 ) )
}
doStats( f )
If not, you're probably best looking at named queries like tomas says