sirius.db.mixing.query

Class QueryCompiler<C extends Constraint>

java.lang.Object

sirius.db.mixing.query.QueryCompiler<C>

Type Parameters:

C - the type of constraints generated by this compiler

Direct Known Subclasses:

ElasticQueryCompiler, MongoQueryCompiler, SQLQueryCompiler

public abstract class QueryCompiler<C extends Constraint>
extends Object

Parses an SQL like query and compiles it into a Constraint.

It also provides support for QueryTags embedded in the given query.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	QueryCompiler.FieldValue Represents a value parsed for a field.

Field Summary

Fields

Modifier and Type	Field and Description
protected static sirius.kernel.di.GlobalContext	ctx
protected EntityDescriptor	descriptor
protected FilterFactory<C>	factory
protected parsii.tokenizer.LookaheadReader	reader
protected List<QueryField>	searchFields

Constructor Summary

Constructors

Constructor and Description
QueryCompiler(FilterFactory<C> factory, EntityDescriptor descriptor, String query, List<QueryField> searchFields) Creates a new instance for the given factory entity and query.

Method Summary

Modifier and Type	Method and Description
C	compile() Compiles the query into a constraint.
protected C	compileDefaultSearch(List<QueryField> searchFields, QueryCompiler.FieldValue token)
protected C	compileFieldEquals(Mapping field, QueryCompiler.FieldValue value)
protected abstract C	compileSearchToken(Mapping field, QueryField.Mode mode, String value)
protected C	parseOperation(String field)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

factory

protected FilterFactory<C extends Constraint> factory

descriptor

protected EntityDescriptor descriptor

searchFields

protected final List<QueryField> searchFields

reader

protected final parsii.tokenizer.LookaheadReader reader

ctx

protected static sirius.kernel.di.GlobalContext ctx

Constructor Detail

QueryCompiler

public QueryCompiler(FilterFactory<C> factory,
                     EntityDescriptor descriptor,
                     String query,
                     List<QueryField> searchFields)

Creates a new instance for the given factory entity and query.

Parameters:

factory - the factory used to create constraints

descriptor - the descriptor of entities being queried

query - the query to compile

searchFields - the default search fields to query

Method Detail

compile

@Nullable
public C compile()

Compiles the query into a constraint.

Returns:

the compiled constraint

compileDefaultSearch

protected C compileDefaultSearch(List<QueryField> searchFields,
                                 QueryCompiler.FieldValue token)

compileSearchToken

protected abstract C compileSearchToken(Mapping field,
                                        QueryField.Mode mode,
                                        String value)

parseOperation

protected C parseOperation(String field)

compileFieldEquals

protected C compileFieldEquals(Mapping field,
                               QueryCompiler.FieldValue value)