Examples of org.apache.cayenne.exp.ExpressionException

org.apache.cayenne.exp.ExpressionException
RuntimeException subclass thrown in cases of errors during expressions creation/parsing.

    public Iterator resolvePathComponents(Expression pathExp) throws ExpressionException {


        // resolve DB_PATH if we can
        if (pathExp.getType() == Expression.DB_PATH) {
            if (getDbEntity() == null) {
                throw new ExpressionException("Can't resolve DB_PATH '"
                        + pathExp
                        + "', DbEntity is not set.");
            }


            return getDbEntity().resolvePathComponents(pathExp);
        }


        if (pathExp.getType() == Expression.OBJ_PATH) {
            return new PathIterator((String) pathExp.getOperand(0));
        }


        throw new ExpressionException("Invalid expression type: '"
                + pathExp.expName()
                + "',  OBJ_PATH is expected.");
    }

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        super(ExpressionParserTreeConstants.JJTNAMEDPARAMETER);
        setValue(value);
    }


    protected Object evaluateNode(Object o) throws Exception {
        throw new ExpressionException(
            "Uninitialized parameter: " + value + ", call 'expWithParameters' first.");
    }

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        return copy;
    }


    public void setValue(Object value) {
        if (value == null) {
            throw new ExpressionException("Null Parameter value");
        }


        String name = value.toString().trim();
        if (name.length() == 0) {
            throw new ExpressionException("Empty Parameter value");
        }


        super.setValue(new ExpressionParameter(name));
    }

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        this.dbAttributeRemoved(new AttributeEvent(this, null, this, MapEvent.REMOVE));
    }


    public Iterator resolvePathComponents(Expression pathExp) throws ExpressionException {
        if (pathExp.getType() != Expression.DB_PATH) {
            throw new ExpressionException("Invalid expression type: '"
                    + pathExp.expName()
                    + "',  DB_PATH is expected.");
        }


        return new PathIterator((String) pathExp.getOperand(0));

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            // see if this is an attribute
            Attribute attr = currentEnt.getAttribute(pathComp);
            if (attr != null) {
                // do a sanity check...
                if (toks.hasMoreTokens()) {
                    throw new ExpressionException(
                            "Attribute must be the last component of the path: '"
                                    + pathComp
                                    + "'.",
                            path,
                            null);
                }


                return attr;
            }


            Relationship rel = currentEnt.getRelationship(pathComp);
            if (rel != null) {
                currentEnt = rel.getTargetEntity();
                return rel;
            }


            // build error message
            StringBuffer buf = new StringBuffer();
            buf
                    .append("Can't resolve path component: [")
                    .append(currentEnt.getName())
                    .append('.')
                    .append(pathComp)
                    .append("].");
            throw new ExpressionException(buf.toString(), path, null);
        }

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    public Iterator resolvePathComponents(Expression pathExp) throws ExpressionException {


        // resolve DB_PATH if we can
        if (pathExp.getType() == Expression.DB_PATH) {
            if (getDbEntity() == null) {
                throw new ExpressionException("Can't resolve DB_PATH '"
                        + pathExp
                        + "', DbEntity is not set.");
            }


            return getDbEntity().resolvePathComponents(pathExp);
        }


        if (pathExp.getType() == Expression.OBJ_PATH) {
            return new PathIterator((String) pathExp.getOperand(0));
        }


        throw new ExpressionException("Invalid expression type: '"
                + pathExp.expName()
                + "',  OBJ_PATH is expected.");
    }

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                    newChildren[j++] = c;
                }
            }


            if (j != newSize) {
                throw new ExpressionException("Assertion error: " + j + " != " + newSize);
            }


            this.children = newChildren;
        }
    }

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        try {
            return evaluateNode(o);
        }
        catch (Throwable th) {
            String string = this.toString();
            throw new ExpressionException(
                    "Error evaluating expression '" + string + "'",
                    string,
                    Util.unwindException(th));
        }
    }

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                    newChildren[j++] = c;
                }
            }


            if (j != newSize) {
                throw new ExpressionException("Assertion error: " + j + " != " + newSize);
            }


            this.children = newChildren;
        }
    }

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        try {
            return evaluateNode(o);
        }
        catch (Throwable th) {
            String string = this.toString();
            throw new ExpressionException(
                "Error evaluating expression '" + string + "'",
                string,
                Util.unwindException(th));
        }
    }

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Related Classes of org.apache.cayenne.exp.ExpressionException

org.apache.cayenne.access.trans.QualifierTranslator

org.apache.cayenne.exp.parser.AggregateConditionNode

org.apache.cayenne.exp.parser.ASTNamedParameter

org.apache.cayenne.exp.parser.ASTObjPath

org.apache.cayenne.exp.parser.ConditionNode

org.apache.cayenne.exp.parser.IgnoreCaseNode

org.apache.cayenne.exp.parser.SimpleNode

org.apache.cayenne.map.DbEntity

org.apache.cayenne.map.Entity$PathIterator

org.apache.cayenne.map.ObjEntity

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