This is probably an easy question but I do not get it.
In my model I want to create orders based on real data, in this real data there is a start location , I set those as parameter value of the order agent from the database see pictures below:
Database anylogic
Parameters order agent
Now I want at the source block to let the order arrive at the departement, which is exactly the same name as the string parameter of the order, so I did this:
Source part
But it says, cannot convert from string to Inode, so my question is how do I type the syntax that he converts the string name to the node with exactly the same name, because the departement node also is called Departement1 etc.
Thanks in advance!
I would have liked to put this answer as a comment, as I'm still a relative beginner at AnyLogic and I'm sure there are more elegant approaches, but due to lack of reputation, here it it:
You can get the String value of the name of an INode object with INode.getName(), as documented here : https://anylogic.help/api/com/anylogic/engine/markup/INode.html#getName()
After which it would only be a matter of creating a creating a list that contains your nodes, creating a function that iterates through that list and fills out a Map with the name/node pair.
You can then use another function within your agent to assign the corresponding node to a variable inside your agent, and use that to dynamically define their arrival location.
Assuming you've created a Map of name col_nodeNameMatch, you'd then do something like :
for (INode n : col_nodes) {
if (n.getName().equals(departement)){
col_nodeNameMatch.put(departement, n);
break;
}
}
Followed by the following every time an agent needs to find its arrival node :
v_arrivalNode = col_nodeNameMatch.get(departement);
Thank you Stuart for the much more efficient suggestion of using a Map.
Related
I'm attempting to find all values that match any item within a list of values within cypher. Similar to a SQL query with in and not in. I also want to find all values that are not in the list in a different query. The idea is I want to assign a property to each node that is binary and indicates whether the name of the node is within the predefined list.
I've tried the following code blocks:
MATCH (temp:APP) - [] -> (temp2:EMAIL_DOMAIN)
WHERE NOT temp2.Name IN ['GMAIL.COM', 'YAHOO.COM', 'OUTLOOK.COM', 'ICLOUD.COM', 'LIVE.COM']
RETURN temp
This block returns nothing, but should return a rather large amount of data.
MATCH (temp:APP) - [] -> (temp2:EMAIL_DOMAIN)
WHERE temp2.Name NOT IN ['GMAIL.COM', 'YAHOO.COM', 'OUTLOOK.COM', 'ICLOUD.COM', 'LIVE.COM']
RETURN temp
This code block returns an error in relation to the NOT's position. Does anyone know the correct syntax for this statement? I've looked around online and in the neo4j documentation, but there are a lot of conflicting ideas with version changes. Thanks in advance!
Neo4j is case sensitive so you need to check the data to ensure that the EMAIL_DOMAIN.Name is all upper case. If Name is mixed case, you can convert the name using toUpper(). If Name is all lower case, then you need to convert the values in your query.
MATCH (temp:APP) - [] -> (temp2:EMAIL_DOMAIN)
WHERE NOT toUpper(temp2.Name) IN ['GMAIL.COM', 'YAHOO.COM', 'OUTLOOK.COM', 'ICLOUD.COM', 'LIVE.COM']
RETURN temp
I would like to avoid costly repeated data base queries in Anylogic. I have seen the following thread in Stack Overflow What is the fastest way to look up continuous data on Anylogic (Java, SQL) where a simple three step answer is provided but I'm not sure what the second point of the three actually means:
Save all rows as instances of that class at model start-up into a map - you can use Origin/Destination as the key (use Anylogic's Pair object) and the class instance as the value
I have created a class that takes as inputs the information from each column of my database. I would now like to save each row as an instance of that class - is there an easy way to do this? I may be missing something simple as I'm new to Anylogic.
I'm also unsure of how to create a mapping, if anyone could add more detail to point 2 above I'd be very grateful!
this is effectively the best advice, you created the class, which is a great step, but now, one element of that class, will be used as the key... for example the name... for instance if your class has firstName as one variable and lastName as another variable, you will use a string that is the concatenation of firstName and lastName as your key. Of course any key is fine, assuming that it is unique for all your table. Also an integer as an id is ok too.
create a collection of type LinkedHashMap
Create a class (you did that)
Your collection will take as the key a String (first + last name) and as the value of the elment the class...
now, when you read your database you will have something like this:
for(Tuple t : yourQueryResults){
YourClass yc=new YourClass(t.get(db.var1),t.get(db.var2));
String totalName=t.get(db.first_name)+"_"+t.get(db.last_name);
yourCollection.put(totalName,yc);
}
Now every time you want to find someone with the a name, for example "John Doe", instead of making a query, you will do
yourCollection.get("John_Doe").theVarYouWant;
if you use an id instead of the name, you can set an int as the key, and then you will just do yourCollection.get(theId).theVarYouWant
I could need some help with a Anylogic Model.
Model (short): Manufacturing scenario with orders move in a individual route. The workplaces (WP) are dynamical created by simulation start. Their names, quantity and other parameters are stored in a database (excel Import). Also the orders are created according to an import. The Agent population "order" has a collection routing which contains the Workplaces it has to stop in the specific order.
Target: I want a moveTo block in main which finds the next destination of the agent order.
Problem and solution paths:
I set the destination Type to agent and in the Agent field I typed a function agent.getDestination(). This function is in order which returns the next entry of the collection WP destinationName = routing.get(i). With this I get a Datatype error (while run not compiling). I quess it's because the database does not save the entrys as WP Type but only String.
Is there a possiblity to create a collection with agents from an Excel?
After this I tried to use the same getDestination as String an so find via findFirst the WP matching the returned name and return it as WP. WP targetWP = findFirst(wps, w->w.name == destinationName);
Of corse wps (the population of Workplaces) couldn't be found.
How can I search the population?
Maybe with an Agentlink?
I think it is not that difficult but can't find an answer or a solution. As you can tell I'm a beginner... Hope the description is good an someone can help me or give me a hint :)
Thanks
Is there a possiblity to create a collection with agents from an Excel?
Not directly using the collection's properties and, as you've seen, you can't have database (DB) column types which are agent types.1
But this is relatively simple to do directly via Java code (and you can use the Insert Database Query wizard to construct the skeleton code for you).
After this I tried to use the same getDestination as String an so find via findFirst the WP matching the returned name and return it as WP
Yes, this is one approach. If your order details are in Excel/the database, they are presumably referring to workplaces via some String ID (which will be a parameter of the workplace agents you've created from a separate Excel worksheet/database table). You need to use the Java equals method to compare strings though, not == (which is for comparing numbers or whether two objects are the same object).
I want a moveTo block in main which finds the next destination of the agent order
So the general overall solution is
Create a population of Workplace agents (let's say called workplaces in Main) from the DB, each with a String parameter id or similar mapped from a DB column.
Create a population of Order agents (let's say called orders in Main) from the DB and then, in their on-startup action, set up their collection of workplace IDs (type ArrayList, element class String; let's say called workplaceIDsList) using data from another DB table.
Order probably also needs a working variable storing the next index in the list that it needs to go to (so let's say an int variable nextWorkplaceIndex which starts at 0).
Write a function in Main called getWorkplaceByID that has a single String argument id and returns a Workplace. This gets the workplace from the population that matches the ID; a one-line way similar to yours is findFirst(workplaces, w -> w.id.equals(id)).
The MoveTo block (which I presume is in Main) needs to move the Order to an agent defined by getWorkplaceByID(agent.workplaceIDsList.get(nextWorkplaceIndex++)). (The ++ bit increments the index after evaluating the expression so it is ready for the next workplace to go to.)
For populating the collection, you'd have two tables, something like the below (assuming using strings as IDs for workplaces and orders):
orders table: columns for parameters of your orders (including some String id column) other than the workplace-list. (Create one Order agent per row.)
order_workplaces table: columns order_id, sequence_num and workplace_id (so with multiple rows specifying the sequence of workplace IDs for an order ID).
In the On startup action of Order, set up the skeleton query code via the Insert Database Query wizard as below (where we want to loop through all rows for this order's ID and do something --- we'll change the skeleton code to add entries to the collection instead of just printing stuff via traceln like the skeleton code does).
Then we edit the skeleton code to look like the below. (Note we add an orderBy clause to the initial query so we ensure we get the rows in ascending sequence number order.)
List<Tuple> rows = selectFrom(order_workplaces)
.where(order_workplaces.order_id.eq(id))
.orderBy(order_workplaces.sequence_num.asc())
.list();
for (Tuple row : rows) {
workplaceIDsList.add(row.get(order_workplaces.workplace_id));
}
1 The AnyLogic database is a normal relational database --- HSQLDB in fact --- and databases only understand their own specific data types like VARCHAR, with AnyLogic and the libraries it uses translating these to Java types like String. In the user interface, AnyLogic makes it look like you set the column types as int, String, etc. but these are really the Java types that the columns' contents will ultimately be translated into.
AnyLogic does support columns which have option list types (and the special Code type column for columns containing executable Java code) but these are special cases using special logic under the covers to translate the column data (which is ultimately still a string of characters) into the appropriate option list instance or (for Code columns) into compiled-on-the-fly-and-then-executed Java).
Welcome to Stack Overflow :) To create a Population via Excel Import you have to create a method and call Code like this. You also need an empty Population.
int n = excelFile.getLastRowNum(YOUR_SHEET_NAME);
for(int i = FIRST_ROW; i <= n; i++){
String name = excelFile.getCellStringValue(YOUR_SHEET_NAME, i, 1);
double SEC_PARAMETER_TO_READ= excelFile.getCellNumericValue(YOUR_SHEET_NAME, i, 2);
WP workplace = add_wps(name, SEC_PARAMETER_TO_READ);
}
Now if you want to get a workplace by name, you have to create a method similar to your try.
Functionbody:
WP workplaceToFind = wps.findFirst(w -> w.name.equals(destinationName));
if(workplaceToFind != null){
//do what ever you want
}
I have a neo4j database with statistical information on water and waste. In this database are data points linked with the facts that are relevant, including mappings to internal definitions. Here in the attached screenshot is an example of a data point and the related metadata. The node in the center is the value, and the immediate nodes linked by "HAS_DIMENSION" are the dimensions that came with the data provider. These are not fixed and change depending on the provider. Each dimension of interest is mapped to an internal definition. Currently this is my query:
MATCH (o:Observation {uq_id:'e__ABS_AGR_AQ__FSW__MIO_M3__BG__1970____9f07c7a629625e5ae00e35838fcd4f824a3593dd'})-[:HAS_DIMENSION]->()
MATCH (o)-[:HAS_DIMENSION]->()-[:HAS_SYNONYM_FROM]->()-[:WITH_TARGET_DEF]->(v:Variable)<-[:HAS_UNIT]-(u:Unit)
MATCH (o)-[vl0:HAS_DIMENSION]->()-[:HAS_SYNONYM_FROM]->()-[:WITH_TARGET_DEF]->(l:Location)
MATCH (o)-[vc0:HAS_DIMENSION]->()-[:HAS_SYNONYM_FROM]->()-[:WITH_TARGET_DEF]->(c:Country)
MATCH (o)-[vy0:HAS_DIMENSION]->()-[:HAS_SYNONYM_FROM]->()-[:WITH_TARGET_DEF]->(y:Year)
MATCH (o)-[:HAS_DIMENSION]->(unk0)
MATCH (o)-[sr0:CAME_FROM_FILE]->(ds0)-[sr1:BELONGS_TO]->(s0)
OPTIONAL MATCH (o)-[dtr0:HAS_DIMENSION]->()-[:HAS_SYNONYM_FROM]->()-[:WITH_TARGET_DEF]->(d:DataType)
RETURN *
The issue I have is exemplified by the pink circles. I want only one pink circle (which is a node with label Variable) in the query, in particular I want the variable like follows
MATCH (v:Variable)<-[:MAPS_TO]-()<-[:HAS_DIMENSION]-(o:Observation)
By this I want to force it to observe a pattern where it identifies the single variable that matches the pattern above for the most number of intermediate nodes. So the "Fresh surface water abstracted" variable would match this pattern, since it has two paths that match this. But the "Fresh groundwater abstracted" would not, since it only has one. How could I accomplish this?
It sounds like you want to return the Variable node with the most number of paths leading to it. Would something like this roughly return the results you are after? You will need to adapt according to your matching statements.
MATCH p=(o:Observation {uq_id:'<your_id>'})-[:HAS_DIMENSION]->()<-[:MAPS_TO]-(v:Variable)
RETURN v.name, COUNT(p) as p ORDER BY p DESC LIMIT 1
Root contains one folder, named pending of type sling:folder.
That have numbers of nodes of nt:unstructured type, having name of long value, that long value is very important for my code processing.
Now I want to get top 20 nodes(20 minimum node name , i.e., long value) data from this pending folder.
Can you tell me how can I write the JCR query for this situation ?
Edit No. 1
Repository repository = JcrUtils.getRepository("http://localhost:4502/crx/server");
Session session = repository.login(new SimpleCredentials("admin", "admin".toCharArray()));
// Obtain the query manager for the session via the workspace ...
QueryManager queryManager = session.getWorkspace().getQueryManager();
// Create a query object ...
String expression = "SELECT * FROM [nt:base] AS s WHERE ISDESCENDANTNODE([/pending])";
Query query = queryManager.createQuery(expression, javax.jcr.query.Query.JCR_SQL2);
// Execute the query and get the results ...
QueryResult result = query.execute();
// Iterate over the nodes in the results ...
NodeIterator nodeIter = result.getNodes();
But it gives some order , different than the order present in root node. But that is not in sort form.
Edit No.2
Now I got the functionality of this function. And it working fine now. The thing that I got is order the node just above the destination node, that is mentioned in second parameter of this function.
But the nodes that is coming is of different names(a number). So how can I sort this using orderBefore. Because everytime we are not able to know the right location(destination Relative Path) where we have to put this node.
You probably don't need a query for this, if you have structure such as
/pending/1
/pending/2
...
/pending/999
you can just iterate over the nodes using the JCR Node's getNodes() method, which returns a NodeIterator.
A sling:orderedFolder node type for "pending" gives a predictable ordering of the child nodes.
In general, using the tree structure instead of queries is more efficient in JCR.
Note also that if you're using Jackrabbit having more than about 10'000 child nodes on the same parent can lead to performance issues.