Examples with SqlMap io.confluent.ksql.schema.ksql.types.SqlMap used on opensource projects

Example 1 with SqlMap

use of io.confluent.ksql.schema.ksql.types.SqlMap in project ksql by confluentinc.

the class SqlTypeWalkerTest method shouldVisitMap.

@Test
public void shouldVisitMap() {
    // Given:
    final SqlMap type = SqlTypes.map(SqlTypes.BIGINT, SqlTypes.INTEGER);
    when(visitor.visitBigInt(any())).thenReturn("Expected-key");
    when(visitor.visitInt(any())).thenReturn("Expected-value");
    when(visitor.visitMap(any(), any(), any())).thenReturn("Expected");
    // When:
    final String result = SqlTypeWalker.visit(type, visitor);
    // Then:
    verify(visitor).visitInt(same(SqlTypes.INTEGER));
    verify(visitor).visitMap(same(type), eq("Expected-key"), eq("Expected-value"));
    assertThat(result, is("Expected"));
}

Example 2 with SqlMap

use of io.confluent.ksql.schema.ksql.types.SqlMap in project ksql by confluentinc.

the class ExpressionFormatterTest method shouldFormatMap.

@Test
public void shouldFormatMap() {
    final SqlMap map = SqlTypes.map(SqlTypes.INTEGER, SqlTypes.BIGINT);
    assertThat(ExpressionFormatter.formatExpression(new Type(map)), equalTo("MAP<INTEGER, BIGINT>"));
}

Example 3 with SqlMap

use of io.confluent.ksql.schema.ksql.types.SqlMap in project ksql by confluentinc.

the class SqlTypeWalker method visitMap.

private static <S, F> S visitMap(final SqlTypeWalker.Visitor<S, F> visitor, final SqlType type) {
    final SqlMap map = (SqlMap) type;
    final S key = visit(map.getKeyType(), visitor);
    final S value = visit(map.getValueType(), visitor);
    return visitor.visitMap(map, key, value);
}

Example 4 with SqlMap

use of io.confluent.ksql.schema.ksql.types.SqlMap in project ksql by confluentinc.

the class CastInterpreter method castToMapFunction.

public static CastFunction castToMapFunction(final SqlType from, final SqlType to, final KsqlConfig config) {
    if (from.baseType() == SqlBaseType.MAP && to.baseType() == SqlBaseType.MAP) {
        final SqlMap fromMap = (SqlMap) from;
        final SqlMap toMap = (SqlMap) to;
        final CastFunction keyCastFunction = castFunction(fromMap.getKeyType(), toMap.getKeyType(), config);
        final CastFunction valueCastFunction = castFunction(fromMap.getValueType(), toMap.getValueType(), config);
        return o -> CastEvaluator.castMap((Map<?, ?>) o, keyCastFunction::cast, valueCastFunction::cast);
    }
    throw new KsqlException("Unsupported cast to " + to + ": " + from);
}

Example 5 with SqlMap

use of io.confluent.ksql.schema.ksql.types.SqlMap in project ksql by confluentinc.

the class GenericsUtil method resolveGenerics.

/**
 * Identifies a mapping from generic type to concrete type based on a {@code schema} and
 * an {@code instance}, where the {@code instance} schema is expected to have no generic
 * types and have the same nested structure as {@code schema}. Any Generic type mapping
 * identified is added to the list passed in.
 *
 * @param mapping   a list of GenericType to SqlType mappings
 * @param schema    the schema that may contain generics
 * @param instance  a schema with the same structure as {@code schema} but with no generics
 *
 * @return whether we were able to resolve generics in the instance and schema
 */
// CHECKSTYLE_RULES.OFF: NPathComplexity
// CHECKSTYLE_RULES.OFF: CyclomaticComplexity
private static boolean resolveGenerics(final List<Entry<GenericType, SqlType>> mapping, final ParamType schema, final SqlArgument instance) {
    if (!isGeneric(schema) && !matches(schema, instance)) {
        // cannot identify from type mismatch
        return false;
    } else if (!hasGenerics(schema)) {
        // nothing left to identify
        return true;
    }
    KsqlPreconditions.checkArgument(isGeneric(schema) || (matches(schema, instance)), "Cannot resolve generics if the schema and instance have differing types: " + schema + " vs. " + instance);
    if (schema instanceof LambdaType) {
        final LambdaType lambdaType = (LambdaType) schema;
        final SqlLambda sqlLambda = instance.getSqlLambdaOrThrow();
        if (lambdaType.inputTypes().size() == sqlLambda.getNumInputs()) {
            if (sqlLambda instanceof SqlLambdaResolved) {
                final SqlLambdaResolved sqlLambdaResolved = (SqlLambdaResolved) sqlLambda;
                int i = 0;
                for (final ParamType paramType : lambdaType.inputTypes()) {
                    if (!resolveGenerics(mapping, paramType, SqlArgument.of(sqlLambdaResolved.getInputType().get(i)))) {
                        return false;
                    }
                    i++;
                }
                return resolveGenerics(mapping, lambdaType.returnType(), SqlArgument.of(sqlLambdaResolved.getReturnType()));
            } else {
                return true;
            }
        } else {
            return false;
        }
    }
    final SqlType sqlType = instance.getSqlTypeOrThrow();
    if (isGeneric(schema)) {
        mapping.add(new HashMap.SimpleEntry<>((GenericType) schema, sqlType));
    }
    if (schema instanceof ArrayType) {
        final SqlArray sqlArray = (SqlArray) sqlType;
        return resolveGenerics(mapping, ((ArrayType) schema).element(), SqlArgument.of(sqlArray.getItemType()));
    }
    if (schema instanceof MapType) {
        final SqlMap sqlMap = (SqlMap) sqlType;
        final MapType mapType = (MapType) schema;
        return resolveGenerics(mapping, mapType.key(), SqlArgument.of(sqlMap.getKeyType())) && resolveGenerics(mapping, mapType.value(), SqlArgument.of(sqlMap.getValueType()));
    }
    if (schema instanceof StructType) {
        throw new KsqlException("Generic STRUCT is not yet supported");
    }
    return true;
}