Example usage for javax.el Expression getExpressionString

Introduction

In this page you can find the example usage for javax.el Expression getExpressionString.

Prototype

public abstract String getExpressionString();

Source Link

Usage

From source file:org.rhq.core.gui.model.PagedDataModel.java

/**
 * Convert RichFaces SortField2s to RHQ OrderingFields.
 *
 * @param sortFields the SortField2s to be converted
 *
 * @return the equivalent RHQ OrderingFields
 */// w ww.ja va 2s.  c o  m
private List<OrderingField> toOrderingFields(List<SortField2> sortFields) {
    if (sortFields == null) {
        sortFields = Collections.emptyList();
    }
    List<OrderingField> orderingFields = new ArrayList<OrderingField>(sortFields.size());
    for (SortField2 sortField : sortFields) {
        Expression expression = sortField.getExpression();
        String expressionString = expression.getExpressionString();
        String field;
        if (expression.isLiteralText()) {
            field = expressionString;
        } else {
            field = expressionString.replaceAll("[#|$]\\{", "").replaceAll("\\}", "");
        }
        Ordering ordering = sortField.getOrdering();
        PageOrdering pageOrdering = (ordering == Ordering.ASCENDING) ? PageOrdering.ASC : PageOrdering.DESC;
        OrderingField orderingField = new OrderingField(field, pageOrdering);
        orderingFields.add(orderingField);
    }
    return orderingFields;
}

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