persistence

I have the following code, using Keras Scikit-Learn Wrapper : from keras.models import Sequential from sklearn import datasets from keras.layers import Dense from sklearn.model_selection import train_test_split from keras.wrappers.scikit_learn import KerasClassifier from sklearn.model_selection import StratifiedKFold from sklearn.model_selection import cross_val_score from sklearn import preprocessing import pickle import numpy as np import json def classifier(X, y): """ Description of classifier """ NOF_ROW, NOF_COL = X.shape def create_model(): # create model model = Sequential() model.add

I'm new to both Haskell and Yesod, and am trying to build a simple web application that can answer queries from an external API. I have built a parser (using Parsec), that gets me the ID of an entity I want to load as a regular Int value. However, I for the life of me can't figure out how to turn this Int into something that get will accept (i. e. a Key (?)). All the examples in the documentation only get the id from previous inserts, or from url dispatch. Any help would be greatly appreciated, since I seem to be stuck... :) Even if the answer can already be found in the comments, I would like

Possible Duplicate: Select top 1 result using JPA i wish to fetch top 10 results based on 'totalTradedVolume' filed of my table 'MasterScrip' when i write the following query: Collection<MasterScrip> sm=null; sm=em.createQuery("select m from MasterScrip m where m.type = :type order by m.totalTradedVolume limit 2").setParameter("type", type).getResultList(); i get the following exception : Caused by: java.lang.IllegalArgumentException: An exception occurred while creating a query in EntityManager: Exception Description: Syntax error parsing the query [select m from MasterScrip m where m.type =

I have a doubt name attribute is there in both @Entity and @Table for example I am allowed to have same value for name attribute @Entity(name = "someThing") @Table(name = "someThing") and I can have different names as well for same class @Entity(name = "someThing") @Table(name = "otherThing") can anybody tell me what is the difference between these two and why we have same attribute in both ? ankit @Entity(name = "someThing") => this name will be used to name the Entity @Table(name = "someThing") => this name will be used to name a table in DB So, in the first case your table and entity will

I was wondering... What's the best way to save data in Unity games. JSONs? If so, how? Thanks Short answer to your long question! Here are some of the different Ways and Methods to Save data for Unity Projects: Platform-Independent: One way of saving data in Unity3D in a Platform-independent way is to use the PlayerPrefs class. (Learn More 1 , 2 ). PERSISTENCE - SAVING AND LOADING DATA using DontDestroyOnLoad , PlayerPrefs , and data serialization Video Tutorial by unity . Server Side: You can also use a Server for saving data (like combination of PHP and MySQL Database). You can use it to

I've seen (and done) data source configuration in two ways (the code below is just for demo): 1) configuration inside persistence units, like: <persistence-unit name="LocalDB" transaction-type="RESOURCE_LOCAL"> <class>domain.User</class> <exclude-unlisted-classes>true</exclude-unlisted-classes> <properties> <property name="hibernate.connection.driver_class" value="org.hsqldb.jdbcDriver"/> <property name="hibernate.connection.url" value="jdbc:hsqldb:hsql://localhost"/> <property name="hibernate.hbm2ddl.auto" value="create"/> <property name="hibernate.c3p0.min_size" value="5"/> .... <property

In my SQL Server 2000 database, I have a timestamp (in function not in data type) column of type DATETIME named lastTouched set to getdate() as its default value/binding. I am using the Netbeans 6.5 generated JPA entity classes, and have this in my code @Basic(optional = false) @Column(name = "LastTouched") @Temporal(TemporalType.TIMESTAMP) private Date lastTouched; However when I try to put the object into the database I get, javax.persistence.PersistenceException: org.hibernate.PropertyValueException: not-null property references a null or transient value: com.generic.Stuff.lastTouched I've

I have a JPA entity instance in the web UI layer of my application. I'd like to know at anytime if this entity has been already persisted in database or if it is only present in the user session. It would be in the business layer, I would use entitymanager.contains(Entity) method, but in my UI layer I think I need an extra attribute indicating whether the entity has been saved or not. How implement that ? I'm considering following option for the moment: a JPA attribute with a default value set by the database, but would force a new read after each update ? a non JPA attribute manually set in