Examples of org.exist.xquery.util.Error

org.exist.xquery.util.Error
Class used to pass an error context to subordinate expressions. Most XQuery classes delegate dynamic type and cardinality checks to classes like {@link org.exist.xquery.DynamicCardinalityCheck} or{@link org.exist.xquery.DynamicTypeCheck}. Those classes don't know the context in which they were called and thus can't produce meaningful error messages. Class Error can be used to pass runtime error descriptions from the top-level object to the lower-level objects. This class also defines some static constants for various error messages. The final formatting of the message is done by class {@link org.exist.xquery.util.Messages}. @author wolf

    public void analyze(AnalyzeContextInfo contextInfo) throws XPathException {
        contextInfo.setParent(this);
        expression.analyze(contextInfo);
        
        expression = new DynamicCardinalityCheck(context, type.getCardinality(), expression,
            new Error("XPDY0050", type.toString()));
        expression = new DynamicTypeCheck(context, type.getPrimaryType(), expression);
    }

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    }


    public void setContentExpr(PathExpr path) {
        path.setUseStaticContext(true);
        final Expression expr = new DynamicCardinalityCheck(context, Cardinality.EXACTLY_ONE, path,
                new Error(Error.FUNC_PARAM_CARDINALITY));
        this.content = expr;
    }

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    }


    public void setNameExpr(Expression expr) {
        expr = new Atomize(context, expr);
        expr = new DynamicCardinalityCheck(context, Cardinality.ZERO_OR_ONE, expr,
                new Error(Error.FUNC_PARAM_CARDINALITY));
        this.qnameExpr = expr;
    }

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  }
  
  @Override
  public void add(PathExpr pathExpr) {
    Expression expr = new DynamicCardinalityCheck(context, Cardinality.ZERO_OR_ONE, pathExpr,
            new Error(Error.FUNC_PARAM_CARDINALITY));
        if (!Type.subTypeOf(expr.returnsType(), Type.ATOMIC))
            {expr = new Atomize(context, expr);}
    super.add(expr);
  }

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