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

Example 16 with JPQLCompiler

use of org.datanucleus.query.compiler.JPQLCompiler 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 17 with JPQLCompiler

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

the class JPQLCompilerTest method testFilterComparisonWithAnd.

/**
 * Tests for simple field-literal comparison in filter and AND of another comparison.
 */
public void testFilterComparisonWithAnd() {
    JavaQueryCompiler compiler = null;
    QueryCompilation compilation = null;
    try {
        compiler = new JPQLCompiler(nucCtx, nucCtx.getClassLoaderResolver(null), null, Project.class, null, "budget = 2 AND 'Sales' = name", 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());
    }
    Expression expr = compilation.getExprFilter();
    assertTrue("Compiled expression should have been DyadicExpression but wasnt", expr instanceof DyadicExpression);
    DyadicExpression dyExpr = (DyadicExpression) expr;
    assertTrue("Compiled left expression should be DyadicExpression but isnt", dyExpr.getLeft() instanceof DyadicExpression);
    assertTrue("Compiled right expression should be DyadicExpression but isnt", dyExpr.getRight() instanceof DyadicExpression);
    DyadicExpression dyExpr1 = (DyadicExpression) dyExpr.getLeft();
    DyadicExpression dyExpr2 = (DyadicExpression) dyExpr.getRight();
    assertEquals("Operator between left and right is incorrect", Expression.OP_AND, dyExpr.getOperator());
    assertTrue("Compiled left expression should be PrimaryExpression but isnt", dyExpr1.getLeft() instanceof PrimaryExpression);
    assertTrue("Compiled right expression should be Literal but isnt", dyExpr1.getRight() instanceof Literal);
    assertEquals("Operator between left (left and right) is incorrect", Expression.OP_EQ, dyExpr1.getOperator());
    PrimaryExpression leftExpr1 = (PrimaryExpression) dyExpr1.getLeft();
    assertEquals("Compiled left expression has incorrect number of tuples", 1, leftExpr1.getTuples().size());
    assertEquals("Compiled left expression 'id' is incorrect", "budget", leftExpr1.getId());
    Literal rightExpr1 = (Literal) dyExpr1.getRight();
    assertTrue("Compiled right expression literal is of incorrect type", rightExpr1.getLiteral() instanceof Long);
    assertEquals("Compiled right expression literal has incorrect value", 2, ((Long) rightExpr1.getLiteral()).longValue());
    assertTrue("Compiled right expression should be PrimaryExpression but isnt", dyExpr2.getRight() instanceof PrimaryExpression);
    assertTrue("Compiled left expression should be Literal but isnt", dyExpr2.getLeft() instanceof Literal);
    assertEquals("Operator between right (left and right) is incorrect", Expression.OP_EQ, dyExpr2.getOperator());
    PrimaryExpression rightExpr2 = (PrimaryExpression) dyExpr2.getRight();
    assertEquals("Compiled left expression has incorrect number of tuples", 1, rightExpr2.getTuples().size());
    assertEquals("Compiled left expression 'id' is incorrect", "name", rightExpr2.getId());
    Literal leftExpr2 = (Literal) dyExpr2.getLeft();
    assertTrue("Compiled right expression literal is of incorrect type", leftExpr2.getLiteral() instanceof String);
    assertEquals("Compiled right expression literal has incorrect value", "Sales", ((String) leftExpr2.getLiteral()));
}