Examples with RelationalOperator org.hypertrace.core.documentstore.expression.operators.RelationalOperator used on opensource projects

Example 1 with RelationalOperator

use of org.hypertrace.core.documentstore.expression.operators.RelationalOperator in project entity-service by hypertrace.

the class ArrayFilteringExpressionConverter method convert.

@Override
public FilterTypeExpression convert(final ColumnIdentifier columnIdentifier, final Operator operator, final LiteralConstant constant, final RequestContext requestContext) throws ConversionException {
    if (ARRAY_OPERATORS.contains(operator)) {
        return primitiveFilteringExpressionConverter.convert(columnIdentifier, operator, constant, requestContext);
    }
    final String id = columnIdentifier.getColumnName();
    final String subDocPath = getSubDocPathById(entityAttributeMapping, id, requestContext);
    final Value value = constant.getValue();
    final ValueType valueType = value.getValueType();
    final List<?> list = valueOneOfAccessor.access(value, valueType);
    if (list.isEmpty()) {
        throw new ConversionException("Conversion of empty-list is unsupported");
    }
    final IdentifierConverter identifierConverter = identifierConverterFactory.getIdentifierConverter(id, subDocPath, valueType, requestContext);
    final IdentifierConversionMetadata metadata = IdentifierConversionMetadata.builder().subDocPath(subDocPath).operator(operator).valueType(valueType).build();
    final String suffixedSubDocPath = identifierConverter.convert(metadata, requestContext);
    final List<RelationalExpression> expressions = new ArrayList<>();
    for (int i = 0; i < list.size(); i++) {
        final IdentifierExpression lhs = IdentifierExpression.of(String.format(suffixedSubDocPath, i));
        final RelationalOperator relationalOperator = convertOperator(operator);
        final ConstantExpression rhs = valueHelper.convertToConstantExpression(value, i);
        final RelationalExpression expression = RelationalExpression.of(lhs, relationalOperator, rhs);
        expressions.add(expression);
    }
    if (expressions.size() == 1) {
        return expressions.get(0);
    }
    return LogicalExpression.builder().operator(LogicalOperator.AND).operands(expressions).build();
}

Example 2 with RelationalOperator

use of org.hypertrace.core.documentstore.expression.operators.RelationalOperator in project entity-service by hypertrace.

the class MapFilteringExpressionConverter method convert.

@Override
public FilterTypeExpression convert(final ColumnIdentifier columnIdentifier, final Operator operator, final LiteralConstant constant, final RequestContext requestContext) throws ConversionException {
    if (!SUPPORTED_OPERATORS.contains(operator)) {
        throw new ConversionException(String.format("Operator %s is not supported", operator));
    }
    final String id = columnIdentifier.getColumnName();
    final String subDocPath = getSubDocPathById(entityAttributeMapping, id, requestContext);
    final Value value = constant.getValue();
    final ValueType valueType = value.getValueType();
    final Map<?, ?> map = valueOneOfAccessor.access(value, valueType);
    if (map.isEmpty()) {
        throw new ConversionException("Conversion of empty-map is unsupported");
    }
    final IdentifierConverter identifierConverter = identifierConverterFactory.getIdentifierConverter(id, subDocPath, valueType, requestContext);
    final IdentifierConversionMetadata metadata = IdentifierConversionMetadata.builder().subDocPath(subDocPath).operator(operator).valueType(valueType).build();
    final String suffixedSubDocPath = identifierConverter.convert(metadata, requestContext);
    final List<RelationalExpression> expressions = new ArrayList<>();
    for (final Map.Entry<?, ?> entry : map.entrySet()) {
        final IdentifierExpression lhs = IdentifierExpression.of(String.format(suffixedSubDocPath, entry.getKey()));
        final RelationalOperator relationalOperator = convertOperator(operator);
        final ConstantExpression rhs = valueHelper.convertToConstantExpression(value, entry.getKey());
        final RelationalExpression expression = RelationalExpression.of(lhs, relationalOperator, rhs);
        expressions.add(expression);
    }
    if (expressions.size() == 1) {
        return expressions.get(0);
    }
    return LogicalExpression.builder().operator(LogicalOperator.AND).operands(expressions).build();
}

Example 3 with RelationalOperator

use of org.hypertrace.core.documentstore.expression.operators.RelationalOperator in project entity-service by hypertrace.

the class NullFilteringExpressionConverter method convert.

@Override
public FilterTypeExpression convert(final ColumnIdentifier columnIdentifier, final Operator operator, final LiteralConstant constant, final RequestContext requestContext) throws ConversionException {
    final String id = columnIdentifier.getColumnName();
    final String subDocPath = getSubDocPathById(entityAttributeMapping, id, requestContext);
    final Value value = constant.getValue();
    final ValueType valueType = value.getValueType();
    final IdentifierConverter identifierConverter = identifierConverterFactory.getIdentifierConverter(id, subDocPath, valueType, requestContext);
    final IdentifierConversionMetadata metadata = IdentifierConversionMetadata.builder().subDocPath(subDocPath).operator(operator).valueType(valueType).build();
    final String suffixedSubDocPath = identifierConverter.convert(metadata, requestContext);
    final IdentifierExpression identifierExpression = IdentifierExpression.of(suffixedSubDocPath);
    final RelationalOperator relationalOperator = convertOperator(operator);
    final ConstantExpression constantExpression = constantExpressionConverter.convert(constant, requestContext);
    RelationalExpression relationalExpression = RelationalExpression.of(identifierExpression, relationalOperator, constantExpression);
    switch(operator) {
        // 'field' EQ 'null' -> 'field' EQ 'null' || 'field' NOT_EXISTS
        case EQ:
            RelationalExpression nonExistenceRelationalExpression = RelationalExpression.of(identifierExpression, convertOperator(Operator.NOT_EXISTS), constantExpression);
            return LogicalExpression.builder().operator(LogicalOperator.OR).operands(List.of(nonExistenceRelationalExpression, relationalExpression)).build();
        default:
            return relationalExpression;
    }
}

Example 4 with RelationalOperator

use of org.hypertrace.core.documentstore.expression.operators.RelationalOperator in project entity-service by hypertrace.

the class PrimitiveFilteringExpressionConverter method convert.

@Override
public FilterTypeExpression convert(final ColumnIdentifier columnIdentifier, final Operator operator, final LiteralConstant constant, final RequestContext requestContext) throws ConversionException {
    final String id = columnIdentifier.getColumnName();
    final String subDocPath = getSubDocPathById(entityAttributeMapping, id, requestContext);
    final Value value = constant.getValue();
    final ValueType valueType = value.getValueType();
    final IdentifierConverter identifierConverter = identifierConverterFactory.getIdentifierConverter(id, subDocPath, valueType, requestContext);
    final IdentifierConversionMetadata metadata = IdentifierConversionMetadata.builder().subDocPath(subDocPath).operator(operator).valueType(valueType).build();
    final String suffixedSubDocPath = identifierConverter.convert(metadata, requestContext);
    final IdentifierExpression identifierExpression = IdentifierExpression.of(suffixedSubDocPath);
    final RelationalOperator relationalOperator = convertOperator(operator);
    final ConstantExpression constantExpression = constantExpressionConverter.convert(constant, requestContext);
    return RelationalExpression.of(identifierExpression, relationalOperator, constantExpression);
}

Example 5 with RelationalOperator

use of org.hypertrace.core.documentstore.expression.operators.RelationalOperator in project document-store by hypertrace.

the class MongoRelationalExpressionParser method parse.

Map<String, Object> parse(final RelationalExpression expression) {
    SelectTypeExpression lhs = expression.getLhs();
    RelationalOperator operator = expression.getOperator();
    SelectTypeExpression rhs = expression.getRhs();
    // Only an identifier LHS and a constant RHS is supported as of now.
    MongoSelectTypeExpressionParser lhsParser = new MongoIdentifierExpressionParser();
    MongoSelectTypeExpressionParser rhsParser = new MongoConstantExpressionParser();
    String key = lhs.accept(lhsParser);
    Object value = rhs.accept(rhsParser);
    return generateMap(key, value, operator);
}