Example usage for org.springframework.util CollectionUtils findValueOfType

Introduction

In this page you can find the example usage for org.springframework.util CollectionUtils findValueOfType.

Prototype

@Nullable
public static Object findValueOfType(Collection<?> collection, Class<?>[] types) 

Source Link

Document

Find a single value of one of the given types in the given Collection: searching the Collection for a value of the first type, then searching for a value of the second type, etc.

Usage

From source file:ua.com.manometer.jasperreports.AbstractJasperReportsView.java

/**
 * Create a populated <code>JasperPrint</code> instance from the configured
 * <code>JasperReport</code> instance.
 * <p>By default, this method will use any <code>JRDataSource</code> instance
 * (or wrappable <code>Object</code>) that can be located using {@link #setReportDataKey},
 * a lookup for type <code>JRDataSource</code> in the model Map, or a special value
 * retrieved via {@link #getReportData}.
 * <p>If no <code>JRDataSource</code> can be found, this method will use a JDBC
 * <code>Connection</code> obtained from the configured <code>javax.sql.DataSource</code>
 * (or a DataSource attribute in the model). If no JDBC DataSource can be found
 * either, the JasperReports engine will be invoked with plain model Map,
 * assuming that the model contains parameters that identify the source
 * for report data (e.g. Hibernate or JPA queries).
 * @param model the model for this request
 * @throws IllegalArgumentException if no <code>JRDataSource</code> can be found
 * and no <code>javax.sql.DataSource</code> is supplied
 * @throws SQLException if there is an error when populating the report using
 * the <code>javax.sql.DataSource</code>
 * @throws JRException if there is an error when populating the report using
 * a <code>JRDataSource</code>
 * @return the populated <code>JasperPrint</code> instance
 * @see #getReportData/*from   w ww. j a v a2 s.c  o m*/
 * @see #setJdbcDataSource
 */
protected JasperPrint fillReport(Map<String, Object> model) throws Exception {
    // Determine main report.
    JasperReport report = getReport();
    if (report == null) {
        throw new IllegalStateException("No main report defined for 'fillReport' - "
                + "specify a 'url' on this view or override 'getReport()' or 'fillReport(Map)'");
    }

    JRDataSource jrDataSource = null;
    DataSource jdbcDataSourceToUse = null;

    // Try model attribute with specified name.
    if (this.reportDataKey != null) {
        Object reportDataValue = model.get(this.reportDataKey);
        if (reportDataValue instanceof DataSource) {
            jdbcDataSourceToUse = (DataSource) reportDataValue;
        } else {
            jrDataSource = convertReportData(reportDataValue);
        }
    } else {
        Collection values = model.values();
        jrDataSource = CollectionUtils.findValueOfType(values, JRDataSource.class);
        if (jrDataSource == null) {
            JRDataSourceProvider provider = CollectionUtils.findValueOfType(values, JRDataSourceProvider.class);
            if (provider != null) {
                jrDataSource = createReport(provider);
            } else {
                jdbcDataSourceToUse = CollectionUtils.findValueOfType(values, DataSource.class);
                if (jdbcDataSourceToUse == null) {
                    jdbcDataSourceToUse = this.jdbcDataSource;
                }
            }
        }
    }

    if (jdbcDataSourceToUse != null) {
        return doFillReport(report, model, jdbcDataSourceToUse);
    } else {
        // Determine JRDataSource for main report.
        if (jrDataSource == null) {
            jrDataSource = getReportData(model);
        }
        if (jrDataSource != null) {
            // Use the JasperReports JRDataSource.
            if (logger.isDebugEnabled()) {
                logger.debug("Filling report with JRDataSource [" + jrDataSource + "]");
            }
            return JasperFillManager.fillReport(report, model, jrDataSource);
        } else {
            // Assume that the model contains parameters that identify
            // the source for report data (e.g. Hibernate or JPA queries).
            logger.debug("Filling report with plain model");
            return JasperFillManager.fillReport(report, model);
        }
    }
}

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From source file:ua.com.manometer.jasperreports.AbstractJasperReportsView.java

/**
 * Create an appropriate <code>JRDataSource</code> for passed-in report data.
 * Called by {@link #fillReport} when its own lookup steps were not successful.
 * <p>The default implementation looks for a value of type <code>java.util.Collection</code>
 * or object array (in that order). Can be overridden in subclasses.
 * @param model the model map, as passed in for view rendering
 * @return the <code>JRDataSource</code> or <code>null</code> if the data source is not found
 * @see #getReportDataTypes/* www . j a v  a 2s.  c  o  m*/
 * @see #convertReportData
 */
protected JRDataSource getReportData(Map<String, Object> model) {
    // Try to find matching attribute, of given prioritized types.
    Object value = CollectionUtils.findValueOfType(model.values(), getReportDataTypes());
    return (value != null ? convertReportData(value) : null);
}

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From source file:org.springframework.amqp.rabbit.connection.RabbitResourceHolder.java

public Connection getConnection(Class<? extends Connection> connectionType) {
    return CollectionUtils.findValueOfType(this.connections, connectionType);
}

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From source file:org.springframework.jms.connection.JmsResourceHolder.java

@Nullable
public Connection getConnection(Class<? extends Connection> connectionType) {
    return CollectionUtils.findValueOfType(this.connections, connectionType);
}

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From source file:org.springframework.jms.connection.JmsResourceHolder.java

@Nullable
public Session getSession(Class<? extends Session> sessionType, @Nullable Connection connection) {
    List<Session> sessions = (connection != null ? this.sessionsPerConnection.get(connection) : this.sessions);
    return CollectionUtils.findValueOfType(sessions, sessionType);
}

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