Examples with Symbol org.datanucleus.query.compiler.Symbol used on opensource projects

Example 11 with Symbol

use of org.datanucleus.query.compiler.Symbol in project tests by datanucleus.

the class JPQLCompilerTest method testFromInExpression.

/**
 * Tests for from clause with an "IN(...) alias" expression.
 */
public void testFromInExpression() {
    JavaQueryCompiler compiler = null;
    QueryCompilation compilation = null;
    try {
        compiler = new JPQLCompiler(nucCtx, nucCtx.getClassLoaderResolver(null), Department.class.getName() + " d, IN(d.projects) n", null, null, null, null, null, null, null, null, null, null);
        compilation = compiler.compile(new HashMap(), null);
    } catch (NucleusException ne) {
        NucleusLogger.QUERY.error("Exception during compile", ne);
        fail("compilation of filter with valid field threw exception : " + ne.getMessage());
    }
    SymbolTable symtbl = compilation.getSymbolTable();
    Expression[] exprs = compilation.getExprFrom();
    assertEquals("Number of from expressions is incorrect", 2, exprs.length);
    // Candidate clause
    assertTrue("FROM candidate clause is of wrong type " + exprs[0].getClass().getName(), exprs[0] instanceof ClassExpression);
    ClassExpression clsExpr0 = (ClassExpression) exprs[0];
    assertEquals("FROM candidate clause alias is wrong", "d", clsExpr0.getAlias());
    Symbol clsSym0 = symtbl.getSymbol(clsExpr0.getAlias());
    assertEquals("FROM candidate clause class is wrong", Department.class, clsSym0.getValueType());
    assertEquals("FROM candidate clause has incorrect left()", null, clsExpr0.getLeft());
    assertEquals("FROM candidate clause has incorrect right()", null, clsExpr0.getRight());
    // Candidate+IN clause
    assertTrue("FROM candidate+IN clause is of wrong type " + exprs[1].getClass().getName(), exprs[1] instanceof ClassExpression);
    ClassExpression clsExpr1 = (ClassExpression) exprs[1];
    assertEquals("FROM candidate+IN clause alias is wrong", "d", clsExpr1.getAlias());
    Symbol clsSym1 = symtbl.getSymbol(clsExpr1.getAlias());
    assertEquals("FROM candidate+IN clause class is wrong", Department.class, clsSym1.getValueType());
    assertEquals("FROM candidate+IN clause has incorrect left()", null, clsExpr1.getLeft());
    assertTrue("FROM candidate+IN clause has incorrect right() - should be instanceof JoinExpression", clsExpr1.getRight() instanceof JoinExpression);
    JoinExpression joinExpr1 = (JoinExpression) clsExpr1.getRight();
    assertEquals("FROM candidate+IN clause join expression has incorrect alias", "n", joinExpr1.getAlias());
    assertEquals("FROM candidate+IN clause join expression has incorrect join type", JoinType.JOIN_INNER, joinExpr1.getType());
    PrimaryExpression joinPrimExpr1 = (PrimaryExpression) joinExpr1.getJoinedExpression();
    assertEquals("FROM candidate+IN clause join primary expression is incorrect", "d.projects", joinPrimExpr1.getId());
}

Example 12 with Symbol

use of org.datanucleus.query.compiler.Symbol in project tests by datanucleus.

the class JDOQLCompilerTest method testFilterCollectionContainsVariablePlusExtraJoin.

/**
 * Tests for collection.contains(element) && elem.other.field == val.
 */
public void testFilterCollectionContainsVariablePlusExtraJoin() {
    JavaQueryCompiler compiler = null;
    QueryCompilation compilation = null;
    try {
        compiler = new JDOQLCompiler(nucCtx, nucCtx.getClassLoaderResolver(null), null, Inventory.class, null, "products.contains(element) && element.guarantee.numberOfYears < 3", null, null, null, null, null, null, Product.class.getName() + " element", null);
        compilation = compiler.compile(new HashMap(), null);
    } catch (NucleusException ne) {
        NucleusLogger.QUERY.error("Exception thrown during compilation", ne);
        fail("compilation of filter with valid field threw exception : " + ne.getMessage());
    }
    Expression expr = compilation.getExprFilter();
    assertTrue("Compiled expression should have been DyadicExpression but wasnt", expr instanceof DyadicExpression);
    DyadicExpression dyExpr = (DyadicExpression) expr;
    LOG.info(">> expr=" + dyExpr);
    // product.contains(element)
    assertTrue("Left expression should have been InvokeExpression but wasnt", dyExpr.getLeft() instanceof InvokeExpression);
    InvokeExpression leftExpr = (InvokeExpression) dyExpr.getLeft();
    assertTrue("InvokeExpression should have been invoked on PrimaryExpression but wasnt", leftExpr.getLeft() instanceof PrimaryExpression);
    assertEquals("Left expression : Name of field upon which we invoke the method was wrong", "products", ((PrimaryExpression) leftExpr.getLeft()).getId());
    assertEquals("Left expression : Name of invoked method was wrong", "contains", leftExpr.getOperation());
    assertEquals("Left expression : Number of parameters to contains() is wrong", 1, leftExpr.getArguments().size());
    Object param1 = leftExpr.getArguments().get(0);
    assertTrue("Left expression : Parameter1 to contains() is of wrong type", param1 instanceof VariableExpression);
    VariableExpression vrExpr = (VariableExpression) param1;
    assertEquals("Left expression : Name of variable to contains() is incorrect", "element", vrExpr.getId());
    // element.guarantee.numberOfYears < 3
    assertTrue("Right expression should have been DyadicExpression but wasnt", dyExpr.getRight() instanceof DyadicExpression);
    DyadicExpression rightExpr = (DyadicExpression) dyExpr.getRight();
    assertTrue("Right expression (left) should have been PrimaryExpression but wasnt", rightExpr.getLeft() instanceof PrimaryExpression);
    PrimaryExpression rightExprLeft = (PrimaryExpression) rightExpr.getLeft();
    assertTrue("Right expression (left).left is of incorrect type", rightExprLeft.getLeft() instanceof VariableExpression);
    VariableExpression rightExprLeftLeft = (VariableExpression) rightExprLeft.getLeft();
    assertTrue("Right expression (left).left is of incorrect type", rightExprLeft.getLeft() instanceof VariableExpression);
    assertEquals("Right expression (left) part1 is incorrect", "element", rightExprLeftLeft.getId());
    assertEquals("Right expression (left) has incorrect number of tuples", 2, rightExprLeft.getTuples().size());
    assertEquals("Right expression (left) part2 is incorrect", "guarantee", rightExprLeft.getTuples().get(0));
    assertEquals("Right expression (left) part2 is incorrect", "numberOfYears", rightExprLeft.getTuples().get(1));
    assertEquals("Right expression : Operator between left and right is incorrect", Expression.OP_LT, rightExpr.getOperator());
    assertTrue("Right expression (right) should have been Literal but wasnt", rightExpr.getRight() instanceof Literal);
    Literal rightExprRight = (Literal) rightExpr.getRight();
    assertEquals("Right expression (right) literal has incorrect value", 3, ((Long) rightExprRight.getLiteral()).longValue());
    // Check symbols
    SymbolTable symbols = compilation.getSymbolTable();
    assertTrue("Symbol table doesnt have entry for 'element'", symbols.hasSymbol("element"));
    assertTrue("Symbol table doesnt have entry for 'this'", symbols.hasSymbol("this"));
    Symbol sy1 = symbols.getSymbol("element");
    assertEquals("Type of symbol for 'element' is wrong", Product.class, sy1.getValueType());
    Symbol sy2 = symbols.getSymbol("this");
    assertEquals("Type of symbol for 'this' is wrong", Inventory.class, sy2.getValueType());
}