Example usage for javax.servlet.jsp.el ELException getMessage

Introduction

In this page you can find the example usage for javax.servlet.jsp.el ELException getMessage.

Prototype

public String getMessage() 

Source Link

Document

Returns the detail message string of this throwable.

Usage

From source file:gov.nih.nci.cabig.caaers.utils.el.EL.java

public String evaluate(String input) {
    try {/*from  www. j  a v a 2s . co m*/
        StringReader rdr = new StringReader(input);
        ELParser parser = new ELParser(rdr);
        Object result = parser.ExpressionString();

        if (result instanceof String) {
            return (String) result;
        } else if (result instanceof Expression) {
            Expression expr = (Expression) result;
            result = expr.evaluate(this.resolver);
            return result == null ? null : result.toString();
        } else if (result instanceof ExpressionString) {
            Expression expr = (Expression) result;
            result = expr.evaluate(this.resolver);
            return result == null ? null : result.toString();
        } else if (result instanceof BinaryOperatorExpression) {
            BinaryOperatorExpression expr = (BinaryOperatorExpression) result;
            result = expr.evaluate(this.resolver, this.mapper, null);
            return result.toString();
        } else if (result instanceof BooleanLiteral) {
            BooleanLiteral expr = (BooleanLiteral) result;
            result = expr.evaluate(this.resolver, this.mapper, null);
            return result.toString();
        } else {
            System.out.println("Incorrect type returned; not String, Expression or ExpressionString");
            return "";
        }
    } catch (ParseException pe) {
        throw new RuntimeException("ParseException thrown: " + pe.getMessage(), pe);
    } catch (ELException ele) {
        throw new RuntimeException("ELException thrown: " + ele.getMessage(), ele);
    }
}

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From source file:org.apache.falcon.snapshots.retention.HdfsSnapshotEvictor.java

protected static void evictSnapshots(DistributedFileSystem fs, String dirName, String ageLimit,
        int numSnapshots) throws FalconException {
    try {//from w w w . ja v  a  2 s  . c  o  m
        LOG.info("Started evicting snapshots on dir {}{} using policy {}, agelimit {}, numSnapshot {}",
                fs.getUri(), dirName, ageLimit, numSnapshots);

        long evictionTime = System.currentTimeMillis() - EvictionHelper.evalExpressionToMilliSeconds(ageLimit);

        dirName = StringUtils.removeEnd(dirName, Path.SEPARATOR);
        String snapshotDir = dirName + Path.SEPARATOR + HdfsSnapshotUtil.SNAPSHOT_DIR_PREFIX + Path.SEPARATOR;
        FileStatus[] snapshots = fs.listStatus(new Path(snapshotDir));
        if (snapshots.length <= numSnapshots) {
            // no eviction needed
            return;
        }

        // Sort by last modified time, ascending order.
        Arrays.sort(snapshots, new Comparator<FileStatus>() {
            @Override
            public int compare(FileStatus f1, FileStatus f2) {
                return Long.compare(f1.getModificationTime(), f2.getModificationTime());
            }
        });

        for (int i = 0; i < (snapshots.length - numSnapshots); i++) {
            // delete if older than ageLimit while retaining numSnapshots
            if (snapshots[i].getModificationTime() < evictionTime) {
                fs.deleteSnapshot(new Path(dirName), snapshots[i].getPath().getName());
            }
        }

    } catch (ELException ele) {
        LOG.warn("Unable to parse retention age limit {} {}", ageLimit, ele.getMessage());
        throw new FalconException("Unable to parse retention age limit " + ageLimit, ele);
    } catch (IOException ioe) {
        LOG.warn("Unable to evict snapshots from dir {} {}", dirName, ioe);
        throw new FalconException("Unable to evict snapshots from dir " + dirName, ioe);
    }

}

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