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

Example 31 with Literal

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

the class StringExpressionImpl method endsWith.

/* (non-Javadoc)
     * @see org.datanucleus.query.typesafe.StringExpression#endsWith(java.lang.String)
     */
public BooleanExpression endsWith(String str) {
    List<org.datanucleus.query.expression.Expression> args = new ArrayList();
    args.add(new Literal(str));
    org.datanucleus.query.expression.Expression invokeExpr = new InvokeExpression(queryExpr, "endsWith", args);
    return new BooleanExpressionImpl(invokeExpr);
}

Example 32 with Literal

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

the class StringExpressionImpl method charAt.

/* (non-Javadoc)
     * @see org.datanucleus.query.typesafe.StringExpression#charAt(int)
     */
public CharacterExpression charAt(int pos) {
    List<org.datanucleus.query.expression.Expression> args = new ArrayList();
    args.add(new Literal(pos));
    org.datanucleus.query.expression.Expression invokeExpr = new InvokeExpression(queryExpr, "charAt", args);
    return new CharacterExpressionImpl(invokeExpr);
}

Example 33 with Literal

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

the class CollectionExpressionImpl method contains.

/* (non-Javadoc)
     * @see org.datanucleus.query.typesafe.CollectionExpression#contains(java.lang.Object)
     */
public BooleanExpression contains(E elem) {
    List<org.datanucleus.query.expression.Expression> args = new ArrayList();
    args.add(new Literal(elem));
    org.datanucleus.query.expression.Expression invokeExpr = new InvokeExpression(queryExpr, "contains", args);
    return new BooleanExpressionImpl(invokeExpr);
}

Example 34 with Literal

use of org.datanucleus.query.expression.Literal in project tests by datanucleus.

the class JPQLCompilerTest method testFilterWithStringIndexOfLiteral.

/**
 * Tests for "String.indexOf(Literal, int)" in filter.
 */
public void testFilterWithStringIndexOfLiteral() {
    JavaQueryCompiler compiler = null;
    QueryCompilation compilation = null;
    try {
        compiler = new JPQLCompiler(nucCtx, nucCtx.getClassLoaderResolver(null), null, Project.class, null, "LENGTH(name) > 5", 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("DyadicExpression operator should have been > but wasnt", dyExpr.getOperator() == Expression.OP_GT);
    assertTrue("DyadicExpression left should have been InvokeExpression but wasnt", dyExpr.getLeft() instanceof InvokeExpression);
    InvokeExpression leftInvExpr = (InvokeExpression) dyExpr.getLeft();
    assertTrue("InvokeExpression invoked object should have been PrimaryExpression but wasnt", leftInvExpr.getLeft() instanceof PrimaryExpression);
    PrimaryExpression invPrimExpr = (PrimaryExpression) leftInvExpr.getLeft();
    assertEquals("PrimaryExpression field is wrong", "name", invPrimExpr.getId());
    assertEquals("InvokeExpression method is wrong", "length", leftInvExpr.getOperation());
    List args = leftInvExpr.getArguments();
    assertTrue("Number of args should be 0 but isnt", args == null || args.isEmpty());
    assertTrue("DyadicExpression left should have been Literal but wasnt", dyExpr.getRight() instanceof Literal);
    Literal rightExpr = (Literal) dyExpr.getRight();
    assertEquals("Parameter2 to indexOf() has wrong value", new Long(5), rightExpr.getLiteral());
}

Example 35 with Literal

use of org.datanucleus.query.expression.Literal in project tests by datanucleus.

the class JPQLCompilerTest method testFilterComparisonWithAndOr.

/**
 * Tests for filter with field-literal comparison AND another comparison, and ORed with
 * another set of expressions.
 */
public void testFilterComparisonWithAndOr() {
    JavaQueryCompiler compiler = null;
    QueryCompilation compilation = null;
    try {
        compiler = new JPQLCompiler(nucCtx, nucCtx.getClassLoaderResolver(null), null, Project.class, null, "(budget = 2 AND 'Sales' = name) OR (budget >= 50 AND name = 'Marketing')", null, null, null, null, null, null, null);
        compilation = compiler.compile(null, 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_OR, dyExpr.getOperator());
    assertTrue("Compiled left(left) expression should be DyadicExpression but isnt", dyExpr1.getLeft() instanceof DyadicExpression);
    assertTrue("Compiled left(right) expression should be DyadicExpression but isnt", dyExpr1.getRight() instanceof DyadicExpression);
    DyadicExpression dyExpr1a = (DyadicExpression) dyExpr1.getLeft();
    DyadicExpression dyExpr1b = (DyadicExpression) dyExpr1.getRight();
    // 1a : budget == 2
    assertTrue("Compiled left expression should be PrimaryExpression but isnt", dyExpr1a.getLeft() instanceof PrimaryExpression);
    assertTrue("Compiled right expression should be Literal but isnt", dyExpr1a.getRight() instanceof Literal);
    assertEquals("Operator between left (left and right) is incorrect", Expression.OP_EQ, dyExpr1a.getOperator());
    PrimaryExpression leftExpr1a = (PrimaryExpression) dyExpr1a.getLeft();
    assertEquals("Compiled left expression has incorrect number of tuples", 1, leftExpr1a.getTuples().size());
    assertEquals("Compiled left expression 'id' is incorrect", "budget", leftExpr1a.getId());
    Literal rightExpr1a = (Literal) dyExpr1a.getRight();
    assertTrue("Compiled right expression literal is of incorrect type", rightExpr1a.getLiteral() instanceof Long);
    assertEquals("Compiled right expression literal has incorrect value", 2, ((Long) rightExpr1a.getLiteral()).longValue());
    // 1b : "Sales" == name
    assertTrue("Compiled right expression should be PrimaryExpression but isnt", dyExpr1b.getRight() instanceof PrimaryExpression);
    assertTrue("Compiled left expression should be Literal but isnt", dyExpr1b.getLeft() instanceof Literal);
    assertEquals("Operator between right (left and right) is incorrect", Expression.OP_EQ, dyExpr1b.getOperator());
    PrimaryExpression rightExpr1b = (PrimaryExpression) dyExpr1b.getRight();
    assertEquals("Compiled left expression has incorrect number of tuples", 1, rightExpr1b.getTuples().size());
    assertEquals("Compiled left expression 'id' is incorrect", "name", rightExpr1b.getId());
    Literal leftExpr1b = (Literal) dyExpr1b.getLeft();
    assertTrue("Compiled right expression literal is of incorrect type", leftExpr1b.getLiteral() instanceof String);
    assertEquals("Compiled right expression literal has incorrect value", "Sales", ((String) leftExpr1b.getLiteral()));
    assertTrue("Compiled right(left) expression should be DyadicExpression but isnt", dyExpr2.getLeft() instanceof DyadicExpression);
    assertTrue("Compiled right(right) expression should be DyadicExpression but isnt", dyExpr2.getRight() instanceof DyadicExpression);
    DyadicExpression dyExpr2a = (DyadicExpression) dyExpr2.getLeft();
    DyadicExpression dyExpr2b = (DyadicExpression) dyExpr2.getRight();
    // 2a : budget >= 50
    assertTrue("Compiled left expression should be PrimaryExpression but isnt", dyExpr2a.getLeft() instanceof PrimaryExpression);
    assertTrue("Compiled right expression should be Literal but isnt", dyExpr2a.getRight() instanceof Literal);
    assertEquals("Operator between right (left and right) is incorrect", Expression.OP_GTEQ, dyExpr2a.getOperator());
    PrimaryExpression leftExpr2a = (PrimaryExpression) dyExpr2a.getLeft();
    assertEquals("Compiled left expression has incorrect number of tuples", 1, leftExpr2a.getTuples().size());
    assertEquals("Compiled left expression 'id' is incorrect", "budget", leftExpr2a.getId());
    Literal rightExpr2a = (Literal) dyExpr2a.getRight();
    assertTrue("Compiled right expression literal is of incorrect type " + rightExpr2a.getLiteral().getClass().getName(), rightExpr2a.getLiteral() instanceof Long);
    assertEquals("Compiled right expression literal has incorrect value", 50, ((Long) rightExpr2a.getLiteral()).longValue());
    // 2b : name == "Marketing"
    assertTrue("Compiled left expression should be PrimaryExpression but isnt", dyExpr2b.getLeft() instanceof PrimaryExpression);
    assertTrue("Compiled right expression should be Literal but isnt", dyExpr2b.getRight() instanceof Literal);
    assertEquals("Operator between right (left and right) is incorrect", Expression.OP_EQ, dyExpr2b.getOperator());
    PrimaryExpression leftExpr2b = (PrimaryExpression) dyExpr2b.getLeft();
    assertEquals("Compiled left expression has incorrect number of tuples", 1, leftExpr2b.getTuples().size());
    assertEquals("Compiled left expression 'id' is incorrect", "name", leftExpr2b.getId());
    Literal rightExpr2b = (Literal) dyExpr2b.getRight();
    assertTrue("Compiled right expression literal is of incorrect type", rightExpr2b.getLiteral() instanceof String);
    assertEquals("Compiled right expression literal has incorrect value", "Marketing", ((String) rightExpr2b.getLiteral()));
}