Examples with Literal org.datanucleus.query.expression.Literal used on opensource projects

Example 1 with Literal

use of org.datanucleus.query.expression.Literal in project datanucleus-rdbms by datanucleus.

the class QueryToSQLMapper method processPrimaryExpression.

/* (non-Javadoc)
     * @see org.datanucleus.query.evaluator.AbstractExpressionEvaluator#processPrimaryExpression(org.datanucleus.query.expression.PrimaryExpression)
     */
protected Object processPrimaryExpression(PrimaryExpression expr) {
    SQLExpression sqlExpr = null;
    if (expr.getLeft() != null) {
        if (expr.getLeft() instanceof DyadicExpression && expr.getLeft().getOperator() == Expression.OP_CAST) {
            String exprCastName = null;
            if (expr.getLeft().getLeft() instanceof PrimaryExpression) {
                exprCastName = "CAST_" + ((PrimaryExpression) expr.getLeft().getLeft()).getId();
            } else if (expr.getLeft().getLeft() instanceof VariableExpression) {
                exprCastName = "CAST_" + ((VariableExpression) expr.getLeft().getLeft()).getId();
            } else if (expr.getLeft().getLeft() instanceof InvokeExpression) {
                exprCastName = "CAST_" + expr.getLeft().getLeft();
            } else {
                throw new NucleusException("Don't currently support cast of " + expr.getLeft().getLeft());
            }
            expr.getLeft().getLeft().evaluate(this);
            sqlExpr = stack.pop();
            JavaTypeMapping mapping = sqlExpr.getJavaTypeMapping();
            if (mapping instanceof EmbeddedMapping) {
                // Cast of an embedded field, so use same table
                // Extract what we are casting it to
                Literal castLitExpr = (Literal) expr.getLeft().getRight();
                Class castType = resolveClass((String) castLitExpr.getLiteral());
                AbstractClassMetaData castCmd = ec.getMetaDataManager().getMetaDataForClass(castType, clr);
                JavaTypeMapping discMapping = ((EmbeddedMapping) mapping).getDiscriminatorMapping();
                if (discMapping != null) {
                    // Should have a discriminator always when casting this
                    SQLExpression discExpr = exprFactory.newExpression(stmt, sqlExpr.getSQLTable(), discMapping);
                    Object discVal = castCmd.getDiscriminatorValue();
                    SQLExpression discValExpr = exprFactory.newLiteral(stmt, discMapping, discVal);
                    BooleanExpression discRestrictExpr = discExpr.eq(discValExpr);
                    Iterator<String> subclassIter = storeMgr.getSubClassesForClass(castType.getName(), true, clr).iterator();
                    while (subclassIter.hasNext()) {
                        String subclassName = subclassIter.next();
                        AbstractClassMetaData subtypeCmd = storeMgr.getMetaDataManager().getMetaDataForClass(subclassName, clr);
                        discVal = subtypeCmd.getDiscriminatorValue();
                        discValExpr = exprFactory.newLiteral(stmt, discMapping, discVal);
                        BooleanExpression subtypeExpr = discExpr.eq(discValExpr);
                        discRestrictExpr = discRestrictExpr.ior(subtypeExpr);
                    }
                    stmt.whereAnd(discRestrictExpr, true);
                }
                SQLTableMapping tblMapping = new SQLTableMapping(sqlExpr.getSQLTable(), castCmd, sqlExpr.getJavaTypeMapping());
                setSQLTableMappingForAlias(exprCastName, tblMapping);
                SQLTableMapping sqlMapping = getSQLTableMappingForPrimaryExpression(stmt, exprCastName, expr, Boolean.FALSE);
                if (sqlMapping == null) {
                    throw new NucleusException("PrimaryExpression " + expr + " is not yet supported");
                }
                sqlExpr = exprFactory.newExpression(stmt, sqlMapping.table, sqlMapping.mapping);
                stack.push(sqlExpr);
                return sqlExpr;
            }
            // Evaluate the cast
            expr.getLeft().evaluate(this);
            sqlExpr = stack.pop();
            // Extract what we are casting it to
            Literal castLitExpr = (Literal) expr.getLeft().getRight();
            AbstractClassMetaData castCmd = ec.getMetaDataManager().getMetaDataForClass(resolveClass((String) castLitExpr.getLiteral()), clr);
            SQLTableMapping tblMapping = new SQLTableMapping(sqlExpr.getSQLTable(), castCmd, sqlExpr.getJavaTypeMapping());
            setSQLTableMappingForAlias(exprCastName, tblMapping);
            SQLTableMapping sqlMapping = getSQLTableMappingForPrimaryExpression(stmt, exprCastName, expr, Boolean.FALSE);
            if (sqlMapping == null) {
                throw new NucleusException("PrimaryExpression " + expr + " is not yet supported");
            }
            sqlExpr = exprFactory.newExpression(stmt, sqlMapping.table, sqlMapping.mapping);
            stack.push(sqlExpr);
            return sqlExpr;
        } else if (expr.getLeft() instanceof ParameterExpression) {
            // "{paramExpr}.field[.field[.field]]"
            // Need parameter values to process this
            setNotPrecompilable();
            ParameterExpression paramExpr = (ParameterExpression) expr.getLeft();
            Symbol paramSym = compilation.getSymbolTable().getSymbol(paramExpr.getId());
            if (paramSym.getValueType() != null && paramSym.getValueType().isArray()) {
                // Special case : array "methods" (particularly "length")
                String first = expr.getTuples().get(0);
                processParameterExpression(paramExpr, true);
                SQLExpression paramSqlExpr = stack.pop();
                sqlExpr = exprFactory.invokeMethod(stmt, "ARRAY", first, paramSqlExpr, null);
                stack.push(sqlExpr);
                return sqlExpr;
            }
            // Create Literal for the parameter (since we need to perform operations on it)
            processParameterExpression(paramExpr, true);
            SQLExpression paramSqlExpr = stack.pop();
            SQLLiteral lit = (SQLLiteral) paramSqlExpr;
            Object paramValue = lit.getValue();
            List<String> tuples = expr.getTuples();
            Iterator<String> tuplesIter = tuples.iterator();
            Object objValue = paramValue;
            while (tuplesIter.hasNext()) {
                String fieldName = tuplesIter.next();
                if (objValue == null) {
                    NucleusLogger.QUERY.warn(">> Compilation of " + expr + " : need to direct through field \"" + fieldName + "\" on null value, hence not compilable!");
                    // Null value, and we have further path to navigate TODO Handle this "NPE"
                    break;
                }
                objValue = getValueForObjectField(objValue, fieldName);
                // Using literal value of parameter, so cannot precompile it
                setNotPrecompilable();
            }
            if (objValue == null) {
                sqlExpr = exprFactory.newLiteral(stmt, null, null);
                stack.push(sqlExpr);
                return sqlExpr;
            }
            JavaTypeMapping m = exprFactory.getMappingForType(objValue.getClass(), false);
            sqlExpr = exprFactory.newLiteral(stmt, m, objValue);
            stack.push(sqlExpr);
            return sqlExpr;
        } else if (expr.getLeft() instanceof VariableExpression) {
            // "{varExpr}.field[.field[.field]]"
            VariableExpression varExpr = (VariableExpression) expr.getLeft();
            processVariableExpression(varExpr);
            SQLExpression varSqlExpr = stack.pop();
            if (varSqlExpr instanceof UnboundExpression) {
                // Bind as CROSS JOIN for now
                processUnboundExpression((UnboundExpression) varSqlExpr);
                varSqlExpr = stack.pop();
            }
            Class varType = clr.classForName(varSqlExpr.getJavaTypeMapping().getType());
            if (varSqlExpr.getSQLStatement() == stmt.getParentStatement()) {
                // Use parent mapper to get the mapping for this field since it has the table
                SQLTableMapping sqlMapping = parentMapper.getSQLTableMappingForPrimaryExpression(stmt, null, expr, Boolean.FALSE);
                if (sqlMapping == null) {
                    throw new NucleusException("PrimaryExpression " + expr.getId() + " is not yet supported");
                }
                // TODO Cater for the table required to join to not being the primary table of the outer query
                // This should check on
                // getDatastoreAdapter().supportsOption(RDBMSAdapter.ACCESS_PARENTQUERY_IN_SUBQUERY))
                sqlExpr = exprFactory.newExpression(varSqlExpr.getSQLStatement(), sqlMapping.table, sqlMapping.mapping);
                stack.push(sqlExpr);
                return sqlExpr;
            }
            SQLTableMapping varTblMapping = getSQLTableMappingForAlias(varExpr.getId());
            if (varTblMapping == null) {
                throw new NucleusUserException("Variable " + varExpr.getId() + " is not yet bound, so cannot get field " + expr.getId());
            }
            if (varTblMapping.cmd == null) {
                throw new NucleusUserException("Variable " + varExpr.getId() + " of type " + varType.getName() + " cannot evaluate " + expr.getId());
            }
            SQLTableMapping sqlMapping = getSQLTableMappingForPrimaryExpression(varSqlExpr.getSQLStatement(), varExpr.getId(), expr, Boolean.FALSE);
            sqlExpr = exprFactory.newExpression(sqlMapping.table.getSQLStatement(), sqlMapping.table, sqlMapping.mapping);
            stack.push(sqlExpr);
            return sqlExpr;
        } else if (expr.getLeft() instanceof InvokeExpression) {
            InvokeExpression invokeExpr = (InvokeExpression) expr.getLeft();
            SQLExpression invokedSqlExpr = getInvokedSqlExpressionForInvokeExpression(invokeExpr);
            processInvokeExpression(invokeExpr, invokedSqlExpr);
            SQLExpression invokeSqlExpr = stack.pop();
            Table tbl = invokeSqlExpr.getSQLTable().getTable();
            if (expr.getTuples().size() > 1) {
                throw new NucleusUserException("Dont currently support evaluating " + expr.getId() + " on " + invokeSqlExpr);
            }
            SQLTable invokeSqlTbl = invokeSqlExpr.getSQLTable();
            if (invokedSqlExpr.getJavaTypeMapping() instanceof OptionalMapping && invokeExpr.getOperation().equals("get") && expr.getTuples().size() == 1) {
                OptionalMapping opMapping = (OptionalMapping) invokedSqlExpr.getJavaTypeMapping();
                if (opMapping.getWrappedMapping() instanceof PersistableMapping) {
                    // Special case of Optional.get().{field}, so we need to join to the related table
                    AbstractMemberMetaData mmd = invokedSqlExpr.getJavaTypeMapping().getMemberMetaData();
                    AbstractClassMetaData otherCmd = ec.getMetaDataManager().getMetaDataForClass(mmd.getCollection().getElementType(), clr);
                    Table otherTbl = storeMgr.getDatastoreClass(otherCmd.getFullClassName(), clr);
                    // Optional type so do LEFT OUTER JOIN since if it is null then we would eliminate all other results
                    invokeSqlTbl = stmt.join(JoinType.LEFT_OUTER_JOIN, invokeSqlExpr.getSQLTable(), opMapping.getWrappedMapping(), otherTbl, null, otherTbl.getIdMapping(), null, null, true);
                    tbl = invokeSqlTbl.getTable();
                }
            }
            if (tbl instanceof DatastoreClass) {
                // Table of a class, so assume to have field in the table of the class
                // TODO Allow joins to superclasses if required
                JavaTypeMapping mapping = ((DatastoreClass) tbl).getMemberMapping(expr.getId());
                if (mapping == null) {
                    throw new NucleusUserException("Dont currently support evaluating " + expr.getId() + " on " + invokeSqlExpr + ". The field " + expr.getId() + " doesnt exist in table " + tbl);
                }
                sqlExpr = exprFactory.newExpression(stmt, invokeSqlTbl, mapping);
                stack.push(sqlExpr);
                return sqlExpr;
            } else if (tbl instanceof JoinTable) {
                if (invokeSqlExpr.getJavaTypeMapping() instanceof EmbeddedMapping) {
                    // Table containing an embedded element/key/value so assume we have a column in the join table
                    EmbeddedMapping embMapping = (EmbeddedMapping) invokeSqlExpr.getJavaTypeMapping();
                    JavaTypeMapping mapping = embMapping.getJavaTypeMapping(expr.getId());
                    if (mapping == null) {
                        throw new NucleusUserException("Dont currently support evaluating " + expr.getId() + " on " + invokeSqlExpr + ". The field " + expr.getId() + " doesnt exist in table " + tbl);
                    }
                    sqlExpr = exprFactory.newExpression(stmt, invokeSqlTbl, mapping);
                    stack.push(sqlExpr);
                    return sqlExpr;
                }
            }
            throw new NucleusUserException("Dont currently support evaluating " + expr.getId() + " on " + invokeSqlExpr + " with invoke having table of " + tbl);
        } else {
            throw new NucleusUserException("Dont currently support PrimaryExpression with 'left' of " + expr.getLeft());
        }
    }
    // Real primary expression ("field.field", "alias.field.field" etc)
    SQLTableMapping sqlMapping = getSQLTableMappingForPrimaryExpression(stmt, null, expr, null);
    if (sqlMapping == null) {
        throw new NucleusException("PrimaryExpression " + expr.getId() + " is not yet supported");
    }
    sqlExpr = exprFactory.newExpression(stmt, sqlMapping.table, sqlMapping.mapping);
    if (sqlMapping.mmd != null && sqlExpr instanceof MapExpression) {
        // This sqlMapping is for something joined in a FROM clause, so set the alias on the returned MapExpression to avoid doing the same joins
        String alias = getAliasForSQLTableMapping(sqlMapping);
        if (alias == null && parentMapper != null) {
            alias = parentMapper.getAliasForSQLTableMapping(sqlMapping);
        }
        ((MapExpression) sqlExpr).setAliasForMapTable(alias);
    }
    stack.push(sqlExpr);
    return sqlExpr;
}

Example 2 with Literal

use of org.datanucleus.query.expression.Literal in project datanucleus-rdbms by datanucleus.

the class QueryToSQLMapper method getInvokedSqlExpressionForInvokeExpression.

protected SQLExpression getInvokedSqlExpressionForInvokeExpression(InvokeExpression expr) {
    Expression invokedExpr = expr.getLeft();
    SQLExpression invokedSqlExpr = null;
    if (invokedExpr == null) {
    // Static method
    } else if (invokedExpr instanceof PrimaryExpression) {
        processPrimaryExpression((PrimaryExpression) invokedExpr);
        invokedSqlExpr = stack.pop();
    } else if (invokedExpr instanceof Literal) {
        processLiteral((Literal) invokedExpr);
        invokedSqlExpr = stack.pop();
    } else if (invokedExpr instanceof ParameterExpression) {
        // TODO May be needed to set the second parameter to "false" here and then if the method
        // being invoked needs the parameters as a normal SQLLiteral then allow it to convert it itself
        processParameterExpression((ParameterExpression) invokedExpr, true);
        invokedSqlExpr = stack.pop();
    } else if (invokedExpr instanceof InvokeExpression) {
        processInvokeExpression((InvokeExpression) invokedExpr);
        invokedSqlExpr = stack.pop();
    } else if (invokedExpr instanceof VariableExpression) {
        processVariableExpression((VariableExpression) invokedExpr);
        invokedSqlExpr = stack.pop();
    } else if (invokedExpr instanceof ArrayExpression) {
        ArrayExpression arrExpr = (ArrayExpression) invokedExpr;
        SQLExpression[] arrSqlExprs = new SQLExpression[arrExpr.getArraySize()];
        for (int i = 0; i < arrExpr.getArraySize(); i++) {
            Expression arrElemExpr = arrExpr.getElement(i);
            arrElemExpr.evaluate(this);
            arrSqlExprs[i] = stack.pop();
        }
        JavaTypeMapping m = exprFactory.getMappingForType(Object[].class, false);
        invokedSqlExpr = new org.datanucleus.store.rdbms.sql.expression.ArrayExpression(stmt, m, arrSqlExprs);
    } else if (invokedExpr instanceof DyadicExpression) {
        DyadicExpression dyExpr = (DyadicExpression) invokedExpr;
        dyExpr.evaluate(this);
        invokedSqlExpr = stack.pop();
    } else {
        throw new NucleusException("Dont currently support invoke expression " + invokedExpr);
    }
    return invokedSqlExpr;
}

Example 3 with Literal

use of org.datanucleus.query.expression.Literal in project datanucleus-rdbms by datanucleus.

the class QueryToSQLMapper method compileUpdate.

/**
 * Method to compile the result clause of the query into the SQLStatement.
 * @param stmt UPDATE statement
 */
protected void compileUpdate(UpdateStatement stmt) {
    if (compilation.getExprUpdate() != null) {
        // Update statement, so generate update expression(s)
        compileComponent = CompilationComponent.UPDATE;
        Expression[] updateExprs = compilation.getExprUpdate();
        SQLExpression[] updateSqlExprs = new SQLExpression[updateExprs.length];
        // TODO If the field being set is in a different table omit it
        boolean performingUpdate = false;
        for (int i = 0; i < updateExprs.length; i++) {
            // "field = value"
            DyadicExpression updateExpr = (DyadicExpression) updateExprs[i];
            // Left-side has to be PrimaryExpression
            SQLExpression leftSqlExpr = null;
            if (updateExpr.getLeft() instanceof PrimaryExpression) {
                processPrimaryExpression((PrimaryExpression) updateExpr.getLeft());
                leftSqlExpr = stack.pop();
                if (leftSqlExpr.getSQLTable() != stmt.getPrimaryTable()) {
                    // Set left to null to signify that it is not applicable to the table of this UPDATE statement
                    leftSqlExpr = null;
                }
            } else {
                throw new NucleusException("Dont currently support update clause containing left expression of type " + updateExpr.getLeft());
            }
            if (leftSqlExpr != null) {
                if (!stmt.getDatastoreAdapter().supportsOption(DatastoreAdapter.UPDATE_STATEMENT_ALLOW_TABLE_ALIAS_IN_SET_CLAUSE)) {
                    // This datastore doesn't allow table alias in UPDATE SET clause, so just use column name
                    for (int j = 0; j < leftSqlExpr.getNumberOfSubExpressions(); j++) {
                        ColumnExpression colExpr = leftSqlExpr.getSubExpression(j);
                        colExpr.setOmitTableFromString(true);
                    }
                }
                performingUpdate = true;
                SQLExpression rightSqlExpr = null;
                if (updateExpr.getRight() instanceof Literal) {
                    processLiteral((Literal) updateExpr.getRight());
                    rightSqlExpr = stack.pop();
                } else if (updateExpr.getRight() instanceof ParameterExpression) {
                    ParameterExpression paramExpr = (ParameterExpression) updateExpr.getRight();
                    paramMappingForName.put(paramExpr.getId(), leftSqlExpr.getJavaTypeMapping());
                    processParameterExpression(paramExpr);
                    rightSqlExpr = stack.pop();
                } else if (updateExpr.getRight() instanceof PrimaryExpression) {
                    processPrimaryExpression((PrimaryExpression) updateExpr.getRight());
                    rightSqlExpr = stack.pop();
                } else if (updateExpr.getRight() instanceof DyadicExpression) {
                    updateExpr.getRight().evaluate(this);
                    rightSqlExpr = stack.pop();
                } else if (updateExpr.getRight() instanceof CaseExpression) {
                    CaseExpression caseExpr = (CaseExpression) updateExpr.getRight();
                    processCaseExpression(caseExpr, leftSqlExpr);
                    rightSqlExpr = stack.pop();
                } else if (updateExpr.getRight() instanceof VariableExpression) {
                    // Subquery?
                    processVariableExpression((VariableExpression) updateExpr.getRight());
                    rightSqlExpr = stack.pop();
                    if (rightSqlExpr instanceof UnboundExpression) {
                        // TODO Support whatever this is
                        throw new NucleusException("Found UnboundExpression in UPDATE clause!");
                    }
                } else {
                    throw new NucleusException("Dont currently support update clause containing right expression of type " + updateExpr.getRight());
                }
                if (rightSqlExpr != null) {
                    updateSqlExprs[i] = leftSqlExpr.eq(rightSqlExpr);
                }
            }
        }
        if (candidateCmd.isVersioned() && options.contains(OPTION_BULK_UPDATE_VERSION)) {
            SQLExpression updateSqlExpr = null;
            ClassTable table = (ClassTable) stmt.getPrimaryTable().getTable();
            JavaTypeMapping verMapping = table.getSurrogateMapping(SurrogateColumnType.VERSION, true);
            ClassTable verTable = table.getTableManagingMapping(verMapping);
            if (verTable == stmt.getPrimaryTable().getTable()) {
                VersionMetaData vermd = candidateCmd.getVersionMetaDataForClass();
                if (vermd.getVersionStrategy() == VersionStrategy.VERSION_NUMBER) {
                    // Increment the version
                    SQLTable verSqlTbl = stmt.getTable(verTable, stmt.getPrimaryTable().getGroupName());
                    SQLExpression verExpr = new NumericExpression(stmt, verSqlTbl, verMapping);
                    SQLExpression incrExpr = verExpr.add(new IntegerLiteral(stmt, exprFactory.getMappingForType(Integer.class, false), Integer.valueOf(1), null));
                    updateSqlExpr = verExpr.eq(incrExpr);
                    SQLExpression[] oldArray = updateSqlExprs;
                    updateSqlExprs = new SQLExpression[oldArray.length + 1];
                    System.arraycopy(oldArray, 0, updateSqlExprs, 0, oldArray.length);
                    updateSqlExprs[oldArray.length] = updateSqlExpr;
                    performingUpdate = true;
                } else if (vermd.getVersionStrategy() == VersionStrategy.DATE_TIME) {
                    // Set version to the time of update
                    SQLTable verSqlTbl = stmt.getTable(verTable, stmt.getPrimaryTable().getGroupName());
                    SQLExpression verExpr = new NumericExpression(stmt, verSqlTbl, verMapping);
                    Object newVersion = ec.getLockManager().getNextVersion(vermd, null);
                    JavaTypeMapping valMapping = exprFactory.getMappingForType(newVersion.getClass(), false);
                    SQLExpression valExpr = new TemporalLiteral(stmt, valMapping, newVersion, null);
                    updateSqlExpr = verExpr.eq(valExpr);
                    SQLExpression[] oldArray = updateSqlExprs;
                    updateSqlExprs = new SQLExpression[oldArray.length + 1];
                    System.arraycopy(oldArray, 0, updateSqlExprs, 0, oldArray.length);
                    updateSqlExprs[oldArray.length] = updateSqlExpr;
                    performingUpdate = true;
                }
            }
        }
        if (performingUpdate) {
            // Only set the updates component of the SQLStatement if anything to update in this table
            stmt.setUpdates(updateSqlExprs);
        }
    }
    compileComponent = null;
}

Example 4 with Literal

use of org.datanucleus.query.expression.Literal in project datanucleus-core by datanucleus.

the class MapContainsEntryMethod method evaluate.

/* (non-Javadoc)
     * @see org.datanucleus.query.evaluator.memory.InvocationEvaluator#evaluate(org.datanucleus.query.expression.InvokeExpression, org.datanucleus.query.evaluator.memory.InMemoryExpressionEvaluator)
     */
public Object evaluate(InvokeExpression expr, Object invokedValue, InMemoryExpressionEvaluator eval) {
    String method = expr.getOperation();
    if (invokedValue == null) {
        return Boolean.FALSE;
    }
    if (!(invokedValue instanceof Map)) {
        throw new NucleusException(Localiser.msg("021011", method, invokedValue.getClass().getName()));
    }
    Object keyParam = expr.getArguments().get(0);
    Object valParam = expr.getArguments().get(1);
    Object keyValue = null;
    if (keyParam instanceof Literal) {
        keyValue = ((Literal) keyParam).getLiteral();
    } else if (keyParam instanceof PrimaryExpression) {
        PrimaryExpression primExpr = (PrimaryExpression) keyParam;
        keyValue = eval.getValueForPrimaryExpression(primExpr);
    } else if (keyParam instanceof ParameterExpression) {
        ParameterExpression paramExpr = (ParameterExpression) keyParam;
        keyValue = QueryUtils.getValueForParameterExpression(eval.getParameterValues(), paramExpr);
    } else if (keyParam instanceof VariableExpression) {
        VariableExpression varExpr = (VariableExpression) keyParam;
        try {
            keyValue = eval.getValueForVariableExpression(varExpr);
        } catch (VariableNotSetException vnse) {
            // Throw an exception with the possible values of values
            throw new VariableNotSetException(varExpr, ((Map) invokedValue).values().toArray());
        }
    } else {
        throw new NucleusException("Dont currently support use of containsEntry(" + keyParam.getClass().getName() + ",?)");
    }
    Object valValue = null;
    if (valParam instanceof Literal) {
        valValue = ((Literal) valParam).getLiteral();
    } else if (keyParam instanceof PrimaryExpression) {
        PrimaryExpression primExpr = (PrimaryExpression) valParam;
        valValue = eval.getValueForPrimaryExpression(primExpr);
    } else if (keyParam instanceof ParameterExpression) {
        ParameterExpression paramExpr = (ParameterExpression) valParam;
        valValue = QueryUtils.getValueForParameterExpression(eval.getParameterValues(), paramExpr);
    } else if (keyParam instanceof VariableExpression) {
        VariableExpression varExpr = (VariableExpression) valParam;
        try {
            valValue = eval.getValueForVariableExpression(varExpr);
        } catch (VariableNotSetException vnse) {
            // Throw an exception with the possible values of values
            throw new VariableNotSetException(varExpr, ((Map) invokedValue).values().toArray());
        }
    } else {
        throw new NucleusException("Dont currently support use of containsEntry(?," + valParam.getClass().getName() + ")");
    }
    Map invokedMap = (Map) invokedValue;
    if (invokedMap.containsKey(keyValue)) {
        Object currentValForKey = invokedMap.get(keyValue);
        if (currentValForKey.equals(valValue)) {
            return Boolean.TRUE;
        }
    }
    return Boolean.FALSE;
}

Example 5 with Literal

use of org.datanucleus.query.expression.Literal in project datanucleus-core by datanucleus.

the class MapGetMethod method evaluate.

/* (non-Javadoc)
     * @see org.datanucleus.query.evaluator.memory.InvocationEvaluator#evaluate(org.datanucleus.query.expression.InvokeExpression, org.datanucleus.query.evaluator.memory.InMemoryExpressionEvaluator)
     */
public Object evaluate(InvokeExpression expr, Object invokedValue, InMemoryExpressionEvaluator eval) {
    String method = expr.getOperation();
    if (invokedValue == null) {
        return null;
    }
    if (!(invokedValue instanceof Map)) {
        throw new NucleusException(Localiser.msg("021011", method, invokedValue.getClass().getName()));
    }
    Object param = expr.getArguments().get(0);
    Object paramValue = null;
    if (param instanceof Literal) {
        paramValue = ((Literal) param).getLiteral();
    } else if (param instanceof PrimaryExpression) {
        PrimaryExpression primExpr = (PrimaryExpression) param;
        paramValue = eval.getValueForPrimaryExpression(primExpr);
    } else if (param instanceof ParameterExpression) {
        ParameterExpression paramExpr = (ParameterExpression) param;
        paramValue = QueryUtils.getValueForParameterExpression(eval.getParameterValues(), paramExpr);
    } else if (param instanceof VariableExpression) {
        VariableExpression varExpr = (VariableExpression) param;
        try {
            paramValue = eval.getValueForVariableExpression(varExpr);
        } catch (VariableNotSetException vnse) {
            // Throw an exception with the possible values of values
            throw new VariableNotSetException(varExpr, ((Map) invokedValue).values().toArray());
        }
    } else {
        throw new NucleusException("Dont currently support use of get(" + param.getClass().getName() + ")");
    }
    return ((Map) invokedValue).get(paramValue);
}