2013-03-23 - NoSQL Spartakiade

› SET note1:title "Mittag"
› SET note1:message "nicht vergessen"

› KEYS note1:*
› GET note1:title
› DEL note1:title note1:message

using (var documentStore = new EmbeddableDocumentStore{
RunInMemory = true}.Initialize())
{
using (var session = documentStore.OpenSession())
{
// Run complex test scenarious
}
}

Ayende Rahien on the HTTP API - http://ravendb.net/documentation/docs-http-api-restful

›
›
›

C:>curl -X GET http://localhost:8080/docs/Categories/1 -i
HTTP/1.1 200 OK
Content-Type: application/json; charset=utf-8
ETag: 00000000-0000-0200-0000-000000000004
{
"Name" : "Normal Importance",
"Color" : "green"
}

var notes = session var notes = session.Advanced
.Query<Note>() .LuceneQuery<Note>()
.Where(n => n.Category == "Important") .Where("Category:Important")
.ToArray(); .ToArray();

CODASYL model SQL Agile becoming more Google MongoDB initial
published invented popular BigTable release

IBM’s Oracle Brewer’s Amazon
IMS INGRES founded CAP born Dynamo

1966 1969 1970 1973 1974 1977 1985 1990’s 2000 2004 2007 2008 2009

10gen NoSQL
Codd publishes Term “object-oriented founded Movement
relational model paper database” appears
in 1970 Apache Cassandra
initial release

–
› use WebNote
› db.Notes.save(
{
Title: 'Mittag',
Message: 'nicht vergessen‘
}
);

› db.Notes.save

–

for(i=0; i<1000; i++) {
['quiz', 'essay', 'exam'].forEach(function(name) {
var score = Math.floor(Math.random() * 50) + 50;
db.scores.save({student: i, name: name, score:
score});
});
}
db.scores.count();

–

› db.Notes.find();
› db.Notes.find({ Title: /Test/i });
› db.Notes.find(
{ "Categories.Color": "red"}).limit(1);

–
› db.Notes.update({Title: 'Test'},
{'$set': {Categories: []}});

› db.Notes.update({Title: 'Test'},
{'$push': {
Categories:
{Color: 'Red'}
}
});

–
› db.dropDatabase();
› db.Notes.drop();
› db.Notes.remove();

use digg
db.stories.findOne();

› use digg;
› db.people.update({name: 'Smith'},
{'$set': {interests: []}});
› db.people.update({name: 'Smith'},
{'$push': {interests: ['chess']}});

var map = function() {
emit(this.user.name, {diggs: this.diggs,
posts: 0});
};

var reduce = function(key, values) {
var diggs = 0;
var posts = 0;
values.forEach(function(doc) {
diggs += doc.diggs;
posts += 1;
});
return {diggs: diggs, posts: posts};
};

db.stories.mapReduce(map, reduce, {out:
'digg_users'});

db.digg_users.find();

> db.shapes.find()

› { _id: "1", type: "c", area: 3.14, radius: 1}
› { _id: "2", type: "s", area: 4, length: 2}
› { _id: "3", type: "r", area: 10, length: 5, width: 2}

// Shapes mit radius > 0 finden
> db.shapes.find( { radius: { $gt: 0 } } )

blogs: {
author : “Johannes",
date : ISODate("2011-09-18T09:56:06.298Z"),
comments : [
{
author : “Klaus",
date : ISODate("2011-09-19T09:56:06.298Z"),
text : “toller Artikel"
}
]
}

blogs: { _id: 1000,
author: “Johannes",
date: ISODate("2011-09-18"),
comments: [ {comment : 1)} ]}

comments : { _id : 1,
blog: 1000,
author : “Klaus",
date : ISODate("2011-09-19")}

> blog = db.blogs.find({ text: "Destination Moon" });
> db.comments.find( { blog: blog._id } );

// Jedes Produkt verlinkt die IDs der Kategorien
products:
{ _id: 10, name: "Destination Moon",
category_ids: [ 20, 30 ] }

products:

// Jede Kategorie verlinkt die IDs der Produkte
categories:
{ _id: 20, name: "adventure",
product_ids: [ 10, 11, 12 ] }

categories:
{ _id: 21, name: "movie",
product_ids: [ 10 ] }

products:

// Jede Kategorie verlinkt die IDs der Produkte
categories:
{ _id: 20, name: "adventure",
product_ids: [ 10, 11, 12 ] }

categories:
{ _id: 21, name: "movie",
product_ids: [ 10 ] }

// Alle Kategorien für ein Produkt
> db.categories.find( { product_ids: 10 } )

products:

// Kategorien beinhalten keine Assoziationen
categories:
{ _id: 20,
name: "adventure"}

products:

categories:
{ _id: 20,
name: "adventure"}

// Alle Produkte für eine Kategorie
> db.products.find( { category_ids: 20 } )

products:

categories:
{ _id: 20,
name: "adventure"}

// Alle Produkte für eine Kategorie
> db.products.find( { category_ids: 20 } )

// Alle Kategorien für ein Produkt product
> product = db.products.find( { _id: some_id } )
> db.categories.find({_id: {$in : product.category_ids}})

2013-03-23 - NoSQL Spartakiade

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2013-03-23 - NoSQL Spartakiade