Example usage for org.springframework.batch.item ItemStreamException ItemStreamException

Introduction

In this page you can find the example usage for org.springframework.batch.item ItemStreamException ItemStreamException.

Prototype

public ItemStreamException(String msg, Throwable nested) 

Source Link

Document

Constructs a new instance with a message and nested exception.

Usage

From source file:org.geoserver.backuprestore.writer.CatalogFileWriter.java

private void doOpen(ExecutionContext executionContext) throws ItemStreamException {
    OutputState outputState = getOutputState();

    if (executionContext.containsKey(getExecutionContextKey(RESTART_DATA_NAME))) {
        outputState.restoreFrom(executionContext);
    }//from w  w  w  .j a  va  2 s. c om

    try {
        outputState.initializeBufferedWriter();
    } catch (IOException ioe) {
        throw new ItemStreamException("Failed to initialize writer", ioe);
    }
}

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From source file:org.geoserver.backuprestore.writer.CatalogFileWriter.java

private OutputState getOutputState() {
    if (state == null) {
        File file;/*from   ww  w .  j  ava  2s .  co  m*/
        try {
            file = resource.getFile();
        } catch (IOException e) {
            throw new ItemStreamException("Could not convert resource to file: [" + resource + "]", e);
        }
        Assert.state(!file.exists() || file.canWrite(), "Resource is not writable: [" + resource + "]");
        state = new OutputState();
        state.setDeleteIfExists(shouldDeleteIfExists);
        state.setAppendAllowed(append);
        state.setEncoding(encoding);
    }
    return state;
}

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From source file:org.springframework.batch.core.step.item.ChunkMonitor.java

@Override
public void open(ExecutionContext executionContext) throws ItemStreamException {
    super.open(executionContext);
    if (streamsRegistered) {
        stream.open(executionContext);/*from w  w  w  .  j  a v a  2 s . c  o  m*/
        ChunkMonitorData data = new ChunkMonitorData(executionContext.getInt(getExecutionContextKey(OFFSET), 0),
                0);
        holder.set(data);
        if (reader == null) {
            logger.warn("No ItemReader set (must be concurrent step), so ignoring offset data.");
            return;
        }
        for (int i = 0; i < data.offset; i++) {
            try {
                reader.read();
            } catch (Exception e) {
                throw new ItemStreamException("Could not position reader with offset: " + data.offset, e);
            }
        }

        resetOffset();
    }
}

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From source file:org.springframework.batch.item.file.FlatFileItemWriter.java

/**
 * @see ItemStream#close()//from   www .  ja v  a2 s  .  c  om
 */
@Override
public void close() {
    super.close();
    if (state != null) {
        try {
            if (footerCallback != null && state.outputBufferedWriter != null) {
                footerCallback.writeFooter(state.outputBufferedWriter);
                state.outputBufferedWriter.flush();
            }
        } catch (IOException e) {
            throw new ItemStreamException("Failed to write footer before closing", e);
        } finally {
            state.close();
            if (state.linesWritten == 0 && shouldDeleteIfEmpty) {
                try {
                    resource.getFile().delete();
                } catch (IOException e) {
                    throw new ItemStreamException("Failed to delete empty file on close", e);
                }
            }
            state = null;
        }
    }
}

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From source file:org.springframework.batch.item.file.FlatFileItemWriter.java

private void doOpen(ExecutionContext executionContext) throws ItemStreamException {
    OutputState outputState = getOutputState();
    if (executionContext.containsKey(getExecutionContextKey(RESTART_DATA_NAME))) {
        outputState.restoreFrom(executionContext);
    }/*from  w  ww .j ava 2s  .c  om*/
    try {
        outputState.initializeBufferedWriter();
    } catch (IOException ioe) {
        throw new ItemStreamException("Failed to initialize writer", ioe);
    }
    if (outputState.lastMarkedByteOffsetPosition == 0 && !outputState.appending) {
        if (headerCallback != null) {
            try {
                headerCallback.writeHeader(outputState.outputBufferedWriter);
                outputState.write(lineSeparator);
            } catch (IOException e) {
                throw new ItemStreamException("Could not write headers.  The file may be corrupt.", e);
            }
        }
    }
}

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From source file:org.springframework.batch.item.support.AbstractFileItemWriter.java

protected OutputState getOutputState() {
    if (state == null) {
        File file;/*from  w w w. ja v a 2s.c  o m*/
        try {
            file = resource.getFile();
        } catch (IOException e) {
            throw new ItemStreamException("Could not convert resource to file: [" + resource + "]", e);
        }
        Assert.state(!file.exists() || file.canWrite(), "Resource is not writable: [" + resource + "]");
        state = new OutputState();
        state.setDeleteIfExists(shouldDeleteIfExists);
        state.setAppendAllowed(append);
        state.setEncoding(encoding);
    }
    return state;
}

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From source file:org.springframework.batch.item.xml.StaxEventItemWriter.java

/**
 * Open the output source//  w w w .  jav  a2 s  . c o m
 * 
 * @see org.springframework.batch.item.ItemStream#open(ExecutionContext)
 */
@SuppressWarnings("unchecked")
@Override
public void open(ExecutionContext executionContext) {
    super.open(executionContext);

    Assert.notNull(resource, "The resource must be set");

    long startAtPosition = 0;

    // if restart data is provided, restart from provided offset
    // otherwise start from beginning
    if (executionContext.containsKey(getExecutionContextKey(RESTART_DATA_NAME))) {
        startAtPosition = executionContext.getLong(getExecutionContextKey(RESTART_DATA_NAME));
        currentRecordCount = executionContext.getLong(getExecutionContextKey(WRITE_STATISTICS_NAME));
        if (executionContext.containsKey(getExecutionContextKey(UNCLOSED_HEADER_CALLBACK_ELEMENTS_NAME))) {
            unclosedHeaderCallbackElements = (List<QName>) executionContext
                    .get(getExecutionContextKey(UNCLOSED_HEADER_CALLBACK_ELEMENTS_NAME));
        }

        restarted = true;
        if (shouldDeleteIfEmpty && currentRecordCount == 0) {
            // previous execution deleted the output file because no items were written
            restarted = false;
            startAtPosition = 0;
        } else {
            restarted = true;
        }
    } else {
        currentRecordCount = 0;
        restarted = false;
    }

    open(startAtPosition);

    if (startAtPosition == 0) {
        try {
            if (headerCallback != null) {
                UnclosedElementCollectingEventWriter headerCallbackWriter = new UnclosedElementCollectingEventWriter(
                        delegateEventWriter);
                headerCallback.write(headerCallbackWriter);
                unclosedHeaderCallbackElements = headerCallbackWriter.getUnclosedElements();
            }
        } catch (IOException e) {
            throw new ItemStreamException("Failed to write headerItems", e);
        }
    }

    this.initialized = true;

}

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From source file:org.springframework.batch.item.xml.StaxEventItemWriter.java

/**
 * Flush and close the output source.//from   w  ww. j ava 2s .c o m
 * 
 * @see org.springframework.batch.item.ItemStream#close()
 */
@Override
public void close() {
    super.close();

    XMLEventFactory factory = createXmlEventFactory();
    try {
        delegateEventWriter.add(factory.createCharacters(""));
    } catch (XMLStreamException e) {
        log.error(e);
    }

    try {
        if (footerCallback != null) {
            XMLEventWriter footerCallbackWriter = delegateEventWriter;
            if (restarted && !unclosedHeaderCallbackElements.isEmpty()) {
                footerCallbackWriter = new UnopenedElementClosingEventWriter(delegateEventWriter,
                        bufferedWriter, unclosedHeaderCallbackElements);
            }
            footerCallback.write(footerCallbackWriter);
        }
        delegateEventWriter.flush();
        endDocument(delegateEventWriter);
    } catch (IOException e) {
        throw new ItemStreamException("Failed to write footer items", e);
    } catch (XMLStreamException e) {
        throw new ItemStreamException("Failed to write end document tag", e);
    } finally {

        try {
            delegateEventWriter.close();
        } catch (XMLStreamException e) {
            log.error("Unable to close file resource: [" + resource + "] " + e);
        } finally {
            try {
                bufferedWriter.close();
            } catch (IOException e) {
                log.error("Unable to close file resource: [" + resource + "] " + e);
            } finally {
                if (!transactional) {
                    closeStream();
                }
            }
        }
        if (currentRecordCount == 0 && shouldDeleteIfEmpty) {
            try {
                resource.getFile().delete();
            } catch (IOException e) {
                throw new ItemStreamException("Failed to delete empty file on close", e);
            }
        }
    }

    this.initialized = false;
}

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