abstract class QueryBase<T : QueryBase<T>>(val definition: NodeDefinition, val entries: List<NodeQueryEntry<*>>)

Base class for queries

Parameters

definition

defines which type of Node is fetched

entries

parts of the query to execute with this query

Type Parameters

T

the type of the query

Inheritors

Constructors

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constructor(definition: NodeDefinition, entries: List<NodeQueryEntry<*>>)

Properties

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val cost: Int

The cost of this NodeQueryPart

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private val entryLookup: Map<String, List<NodeQueryEntry<*>>>

Lookup to get an entry efficiently by resultKeyPath Each group contains all entries under a specific resultKey Necessary as resultKey may not be unique, as only NodeQueryEntry.resultKeyPath with any element of NodeQueryEntry.onlyOnTypes must be unique

Functions

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fun affectsNode(node: Node): Boolean

Checks if any part of this node query affects the given node

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abstract fun copyWithEntries(entries: List<NodeQueryEntry<*>>): T

Copies this query and sets the entries to the given entries

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fun getEntry(resultKey: String, nodeDefinitionProvider: () -> NodeDefinition): NodeQueryEntry<*>

Gets an entry by NodeQueryEntry.resultKeyPath. As multiple subqueries can use the same resultKeyPath if they use different NodeQueryEntry.onlyOnTypes, a list of NodeDefinitions may be necessary to get the correct subquery. This is provided as provider as evaluation is expensive and only necessary in few cases