Examples of com.sun.jdo.spi.persistence.support.sqlstore.RetrieveDesc

Package com.sun.jdo.spi.persistence.support.sqlstore

Examples of com.sun.jdo.spi.persistence.support.sqlstore.RetrieveDesc

com.sun.jdo.spi.persistence.support.sqlstore.RetrieveDesc

This interface represents a retrieve descriptor used by an application to retrieve container-managed entity beans from a persistent store. It allows you specify which persistent fields an application wants to retrieve. In addition, it allows an application to specify sophisticated constraints on its object retrieval.

     * - resets the compiler
     */
    private Object doExecute(ParameterTable params)
    {
        Object result = null;
        RetrieveDesc rd = null;


        try
        {
            // We need to make sure that no parallel thread closes the pm =>
            // try to get a shared lock for the pm. Today, the pm impl does

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     */
    public RetrieveDesc codeGen(PersistenceManager pm, ParameterTable paramtab)
    {
        boolean finer = logger.isLoggable(Logger.FINER);
        boolean finest = logger.isLoggable(Logger.FINEST);
        RetrieveDesc rd = null;
        
        // check if a RetrieveDescriptor for the actual parameter constellation
        // is already available in the cache
        String key = paramtab.getKeyForRetrieveDescCache();

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     */
    public String toString()
    {
        StringBuffer repr = new StringBuffer();
    Object jqlType = getJQLType();
        RetrieveDesc rd = getRetrieveDesc();
        // token text
        repr.append((getText() == null ? "null" : getText())); //NOI18N
        repr.append(" ["); //NOI18N
        // token type
        repr.append(getType());

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     * - resets the compiler
     */
    private Object doExecute(ParameterTable params)
    {
        Object result = null;
        RetrieveDesc rd = null;


        try
        {
            // We need to make sure that no parallel thread closes the pm =>
            // try to get a shared lock for the pm. Today, the pm impl does

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    /**
     * Check the attached RetrieveDesc of the specified binary operation and its operands.
     */
    protected RetrieveDesc getCommonRetrieveDesc(JQLAST left, JQLAST right)
    {
        RetrieveDesc rd = null;
        RetrieveDesc leftRD = left.getRetrieveDesc();
        RetrieveDesc rightRD = right.getRetrieveDesc();


        if ((leftRD == null) && (rightRD != null))
        {
            // case 1: no RetrieveDesc for left operand, but right operand returns RetrieveDesc
            // attach the right RetrieveDesc to all nodes of the left subtree

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    /** Helper method for getCommonRetrieveDesc used to check navigation. */
    protected RetrieveDesc getCommonRetrieveDescHelper(
        RetrieveDesc leftRD, JQLAST leftNavSrc, 
        RetrieveDesc rightRD, JQLAST rightNavSrc)
    {
        RetrieveDesc rd = null;
        String leftPath = (String)rd2TagMap.get(leftRD);
        String rightPath = (String)rd2TagMap.get(rightRD);
        RetrieveDesc leftNavSrcRD = 
            (leftNavSrc == null) ? null : leftNavSrc.getRetrieveDesc();
        String leftNavSrcPath = 
            (leftNavSrcRD == null ) ? null: (String)rd2TagMap.get(leftNavSrcRD);
        RetrieveDesc rightNavSrcRD = 
            (rightNavSrc == null) ? null : rightNavSrc.getRetrieveDesc();
        String rightNavSrcPath = 
            (rightNavSrcRD == null) ? null : (String)rd2TagMap.get(rightNavSrcRD);


        if ((leftNavSrcPath != null) && leftNavSrcPath.equals(rightPath))

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     * Helper method to support getting the common RetrieveDesc for operands 
     * taking three arguments such as like with escape, substring, indexOf.
     */
    protected RetrieveDesc getCommonRetrieveDesc(JQLAST arg1, JQLAST arg2, JQLAST arg3)
    {
        RetrieveDesc rd = null;
        if (arg3 == null) {
            // Just call the regular method for binray ops, 
            // if the third argument is not specified.
            rd = getCommonRetrieveDesc(arg1, arg2);
        }

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     * Helper method to support getting the common RetrieveDesc for object 
     * comparison operators.
     */
    protected RetrieveDesc getObjectComparisonRetrieveDesc(JQLAST left, JQLAST right)
    {
        RetrieveDesc rd = null;
        if ((left.getType() == NAVIGATION) && 
            (right.getType() == VALUE) && (right.getValue() == null))
        {
            // case obj.relship == null
            // take the RetrieveDesc from the navigation source

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     * store this RetrieveDesc in the cache with the specified path expression attached.
     * The method wraps the RetrieveDesc in a DebugRetrieveDesc, if debug mode is on.
     */
    protected RetrieveDesc createRetrieveDesc(String pathExpr, ClassType classType)
    {
        RetrieveDesc rd = pm.getRetrieveDesc(classType.getJavaClass());
        if (logger.isLoggable(Logger.FINEST)) 
        {
            rd = new DebugRetrieveDesc(rd);
            logger.finest("LOG_JQLCDumpRD", "create " + JQLAST.getRetrieveDescRepr(rd)); //NOI18N
        }        
        rd2TagMap.put(rd, pathExpr);
        rd.setNavigationalId(pathExpr);
        return rd;
    }

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        case FIELD_ACCESS:
        // The entire filter consists of a boolean field only.
        // Map this to 'booleanField <> FALSE'. Note, the runtime will
        // create a JDBC parameter for the literal FALSE and call 
        // setBoolean to bind the value.
        RetrieveDesc rd = expr.getRetrieveDesc();
        rd.addConstraint(null, RetrieveDesc.OP_VALUE, Boolean.FALSE);
        expression(expr);
        rd.addConstraint(null, RetrieveDesc.OP_NE, null);
        break;
        default:
        expression(expr);
        break;
        }

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Related Classes of com.sun.jdo.spi.persistence.support.sqlstore.RetrieveDesc

com.sun.jdo.spi.persistence.support.sqlstore.query.jqlc.CodeGeneration

com.sun.jdo.spi.persistence.support.sqlstore.query.jqlc.CodeGeneration$DebugRetrieveDesc

com.sun.jdo.spi.persistence.support.sqlstore.query.jqlc.JQLAST

com.sun.jdo.spi.persistence.support.sqlstore.query.jqlc.JQLC

com.sun.jdo.spi.persistence.support.sqlstore.query.QueryImpl

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