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    Put Indexes Operation

    Ways to deploy indexes - short summary

    Static index:

    There are a few ways to deploy a static-index from the Client API:

    • Call execute() on a specific index instance
    • Call IndexCreation.createIndexes() to deploy multiple indexes
    • Execute PutIndexesOperation maintenance operation on the Document Store - see below
    • Learn more in static indexes

    Auto index:

    • An auto-index is created by the server when making a filtering query that doesn't specify which index to use
    • Learn more in auto indexes


    Put indexes operation with IndexDefinition

    Using PutIndexesOperation with IndexDefinition allows the following:

    • Choosing any name for the index
    • Setting low-level properties available in IndexDefinition

    // Create an index definition
const indexDefinition = new IndexDefinition();

// Name is mandatory, can use any string
indexDefinition.name = "OrdersByTotal";

// Define the index map functions, string format
// A single string for a map-index, multiple strings for a multi-map-index
indexDefinition.maps = new Set([`
    // Define the collection that will be indexed:
    from order in docs.Orders

        // Define the index-entry:
        select new 
        {
            // Define the index-fields within each index-entry:
            Employee = order.Employee,
            Company = order.Company,
            Total = order.Lines.Sum(l => (l.Quantity * l.PricePerUnit) * (1 - l.Discount))
        }`
]);

 // indexDefinition.reduce = ...

// Can provide other index definitions available on the IndexDefinition class
// Override the default values, e.g.:
indexDefinition.deploymentMode = "Rolling";
indexDefinition.priority = "High";
indexDefinition.configuration = {
    "Indexing.IndexMissingFieldsAsNull": "true"
};
// See all available properties in syntax below

// Define the put indexes operation, pass the index definition
// Note: multiple index definitions can be passed, see syntax below
const putIndexesOp = new PutIndexesOperation(indexDefinition);

// Execute the operation by passing it to maintenance.send
await documentStore.maintenance.send(putIndexesOp);
    // Create an index definition
const indexDefinition = new IndexDefinition();

// Name is mandatory, can use any string
indexDefinition.name = "OrdersByTotal";

// Define the index map functions, string format
// A single string for a map-index, multiple strings for a multi-map-index
indexDefinition.maps = new Set([`
    map('Orders', function(order) {
        return {
            Employee: order.Employee,
            Company: order.Company,
            Total: order.Lines.reduce(function(sum, l) {
                return sum + (l.Quantity * l.PricePerUnit) * (1 - l.Discount);
            }, 0)
        };
    });`
]);

// indexDefinition.reduce = ...

// Can provide other index definitions available on the IndexDefinition class
// Override the default values, e.g.:
indexDefinition.deploymentMode = "Rolling";
indexDefinition.priority = "High";
indexDefinition.configuration = {
    "Indexing.IndexMissingFieldsAsNull": "true"
};
// See all available properties in syntax below

// Define the put indexes operation, pass the index definition
// Note: multiple index definitions can be passed, see syntax below
const putIndexesOp = new PutIndexesOperation(indexDefinition);

// Execute the operation by passing it to maintenance.send
await documentStore.maintenance.send(putIndexesOp);

    Syntax 

    const putIndexesOperation = new PutIndexesOperation(indexesToAdd);
    Parameters Type Description
    indexesToAdd ...IndexDefinition[] Definitions of indexes to deploy

    IndexDefinition
    name string Name of the index, a unique identifier
    maps Set<string> All the map functions for the index
    reduce string The index reduce function
    deploymentMode object Deployment mode
    (Parallel, Rolling)
    state object State of index
    (Normal, Disabled, Idle, Error)
    priority object Priority of index
    (Low, Normal, High)
    lockMode object Lock mode of index
    (Unlock, LockedIgnore, LockedError)
    fields Record<string, object> IndexFieldOptions per index field
    additionalSources Record<string, string> Additional code files to be compiled with this index
    additionalAssemblies object[] Additional assemblies that are referenced
    configuration object Can override indexing configuration by setting this Record<string, string>
    outputReduceToCollection string A collection name for saving the reduce results as documents
    reduceOutputIndex number This number will be part of the reduce results documents IDs
    patternForOutputReduceToCollectionReferences string Pattern for documents IDs which reference IDs of reduce results documents
    patternReferencesCollectionName string A collection name for the reference documents created based on provided pattern
    Return value of store.maintenance.send(putIndexesOp)
    object[] operation result per index
    Operation result per index
    index string Name of the index that was added
    raftCommandIndex long Index of raft command that was executed

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