Examples with Variable org.qi4j.api.query.grammar.Variable used on opensource projects

Example 1 with Variable

use of org.qi4j.api.query.grammar.Variable in project qi4j-sdk by Qi4j.

the class AbstractSQLQuerying method modifyFromClauseAndWhereClauseToGetValue.

// TODO refactor this monster of a method to something more understandable
protected Integer modifyFromClauseAndWhereClauseToGetValue(final QualifiedName qName, Object value, final Specification<Composite> predicate, final Boolean negationActive, final Integer currentTableIndex, final ModifiableInt maxTableIndex, final String columnName, final String collectionPath, final SQLVendor vendor, final BooleanBuilder whereClause, final BooleanBuilder afterWhere, final TableReferenceBuilder fromClause, final GroupByBuilder groupBy, final BooleanBuilder having, final List<QNameJoin> qNameJoins, Map<String, Object> variables, final List<Object> values, final List<Integer> valueSQLTypes) {
    if (value instanceof Variable) {
        value = variables.get(((Variable) value).variableName());
    }
    final String schemaName = this._state.schemaName().get();
    Integer result = 1;
    final BooleanFactory b = vendor.getBooleanFactory();
    final LiteralFactory l = vendor.getLiteralFactory();
    final ColumnsFactory c = vendor.getColumnsFactory();
    final QueryFactory q = vendor.getQueryFactory();
    final TableReferenceFactory t = vendor.getTableReferenceFactory();
    if (value instanceof Collection<?>) {
        // Collection
        Integer collectionIndex = 0;
        Boolean collectionIsSet = value instanceof Set<?>;
        Boolean topLevel = collectionPath.equals(DBNames.QNAME_TABLE_COLLECTION_PATH_TOP_LEVEL_NAME);
        String collTable = TABLE_NAME_PREFIX + currentTableIndex;
        String collCol = DBNames.QNAME_TABLE_COLLECTION_PATH_COLUMN_NAME;
        ColumnReferenceByName collColExp = c.colName(collTable, collCol);
        BooleanBuilder collectionCondition = b.booleanBuilder();
        if (topLevel && negationActive) {
            afterWhere.and(b.booleanBuilder(b.neq(collColExp, l.s(DBNames.QNAME_TABLE_COLLECTION_PATH_TOP_LEVEL_NAME))).or(b.isNull(collColExp)).createExpression());
        }
        Integer totalItemsProcessed = 0;
        for (Object item : (Collection<?>) value) {
            String path = collectionPath + DBNames.QNAME_TABLE_COLLECTION_PATH_SEPARATOR + (collectionIsSet ? "*{1,}" : collectionIndex);
            Boolean isCollection = (item instanceof Collection<?>);
            BooleanBuilder newWhere = b.booleanBuilder();
            if (!isCollection) {
                newWhere.reset(b.regexp(collColExp, l.s(path)));
            }
            totalItemsProcessed = totalItemsProcessed + modifyFromClauseAndWhereClauseToGetValue(qName, item, predicate, negationActive, currentTableIndex, maxTableIndex, columnName, path, vendor, newWhere, afterWhere, fromClause, groupBy, having, qNameJoins, variables, values, valueSQLTypes);
            ++collectionIndex;
            collectionCondition.or(newWhere.createExpression());
        }
        result = totalItemsProcessed;
        if (topLevel) {
            if (totalItemsProcessed == 0) {
                collectionCondition.and(b.isNotNull(collColExp)).and(b.eq(collColExp, l.l(DBNames.QNAME_TABLE_COLLECTION_PATH_TOP_LEVEL_NAME)));
            } else if (!negationActive) {
                groupBy.addGroupingElements(q.groupingElement(c.colName(TABLE_NAME_PREFIX + currentTableIndex, DBNames.ENTITY_TABLE_PK_COLUMN_NAME)));
                having.and(b.eq(l.func(SQLFunctions.COUNT, c.colName(TABLE_NAME_PREFIX + currentTableIndex, DBNames.QNAME_TABLE_VALUE_COLUMN_NAME)), l.n(totalItemsProcessed)));
            }
        }
        whereClause.and(collectionCondition.createExpression());
    } else if (value instanceof ValueComposite) {
        // @formatter:off
        for (Property<?> property : Qi4j.FUNCTION_COMPOSITE_INSTANCE_OF.map((ValueComposite) value).state().properties()) {
            Boolean qNameJoinDone = false;
            Integer sourceIndex = maxTableIndex.getInt();
            Integer targetIndex = sourceIndex + 1;
            for (QNameJoin join : qNameJoins) {
                if (join.getSourceQName().equals(qName)) {
                    sourceIndex = join.getSourceTableIndex();
                    if (join.getTargetQName().equals(spi.propertyDescriptorFor(property).qualifiedName())) {
                        // This join has already been done once
                        qNameJoinDone = true;
                        targetIndex = join.getTargetTableIndex();
                        break;
                    }
                }
            }
            if (!qNameJoinDone) {
                // @formatter:off
                QNameInfo info = _state.qNameInfos().get().get(spi.propertyDescriptorFor(property).qualifiedName());
                String prevTableName = TABLE_NAME_PREFIX + sourceIndex;
                String nextTableName = TABLE_NAME_PREFIX + targetIndex;
                fromClause.addQualifiedJoin(JoinType.LEFT_OUTER, t.table(t.tableName(schemaName, info.getTableName()), t.tableAlias(TABLE_NAME_PREFIX + targetIndex)), t.jc(b.booleanBuilder(b.eq(c.colName(prevTableName, DBNames.ALL_QNAMES_TABLE_PK_COLUMN_NAME), c.colName(nextTableName, DBNames.QNAME_TABLE_PARENT_QNAME_COLUMN_NAME))).and(b.eq(c.colName(prevTableName, DBNames.ENTITY_TABLE_PK_COLUMN_NAME), c.colName(nextTableName, DBNames.ENTITY_TABLE_PK_COLUMN_NAME))).createExpression()));
                // @formatter:on
                qNameJoins.add(new QNameJoin(qName, spi.propertyDescriptorFor(property).qualifiedName(), sourceIndex, targetIndex));
                maxTableIndex.setInt(maxTableIndex.getInt() + 1);
            }
            modifyFromClauseAndWhereClauseToGetValue(spi.propertyDescriptorFor(property).qualifiedName(), property.get(), predicate, negationActive, targetIndex, maxTableIndex, columnName, collectionPath, vendor, whereClause, afterWhere, fromClause, groupBy, having, qNameJoins, variables, values, valueSQLTypes);
        }
    // @formatter:on
    } else {
        // Primitive
        ColumnReferenceByName valueCol = c.colName(TABLE_NAME_PREFIX + currentTableIndex, columnName);
        if (value == null) {
            whereClause.and(b.isNull(valueCol));
        } else {
            Object dbValue = value;
            if (Enum.class.isAssignableFrom(value.getClass())) {
                dbValue = this._state.enumPKs().get().get(value.getClass().getName());
            }
            whereClause.and(b.and(b.isNotNull(valueCol), this.getOperator(predicate).getExpression(b, valueCol, l.param())));
            values.add(dbValue);
            valueSQLTypes.add(_typeHelper.getSQLType(value));
            LOGGER.info(TABLE_NAME_PREFIX + currentTableIndex + "." + columnName + " is " + dbValue);
        }
    }
    return result;
}

Example 2 with Variable

use of org.qi4j.api.query.grammar.Variable in project qi4j-sdk by Qi4j.

the class ElasticSearchFinderSupport method resolveVariable.

/* package */
static Object resolveVariable(Object value, Map<String, Object> variables) {
    if (value == null) {
        return null;
    }
    if (value instanceof Variable) {
        Variable var = (Variable) value;
        Object realValue = variables.get(var.variableName());
        if (realValue == null) {
            throw new IllegalArgumentException("Variable " + var.variableName() + " not bound");
        }
        return realValue;
    }
    return value;
}