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Javascript is not enabled in your browser. Enabling JavaScript in your browser will allow you to experience all the features of our site. Learn how to enable JavaScript on your browser. Shop Indie eBooks. Sixteen-year-old Katie Wickliff wants nothing more than to settle into a quiet life with her cursed beloved, William. But both Katie's past—and William's—are far too troubled to allow them to live in peace. Shortly after Katie discovers that a shadowy figure has placed a price on her head—and that a pack of vampires is out to collect the reward—William disappears, leaving Katie without the one person she can trust.

Separated from her true love and surrounded on all sides by danger, Katie must find out who it is that hunts her—before her life is claimed. See All Customer Reviews. Shop Books. Read an excerpt of this book! Add to Wishlist. USD 3. Sign in to Purchase Instantly. Explore Now. Buy As Gift. Overview Sixteen-year-old Katie Wickliff wants nothing more than to settle into a quiet life with her cursed beloved, William. Product Details About the Author. She is a graduate of Pace University and Susquehanna University.

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Write a Review. Related Searches. Go today in science fiction, starting with a fragile foothold and reading on into the future. If you are sure that NONE is the correct character set for you, specify it explicitly in your connection string or connection properties. Logging in Jaybird 3. We will either switch to slf4j, or upgrade Log4J to version 2. The current implementation of DatabaseMetaData methods do not conform to the JDBC specification when it comes to case sensitivity and quoted object names. Trying the uppercased value, when the original parameter value failed to produce results.

In Jaybird 2. U nquoted object names are stored uppercase in Firebird, so in Jaybird 3. It requires JCA 1. This archive can be used for standalone Jaybird deployments. Jaybird has compile-time and run-time dependencies on the JCA 1. Additionally, if Log4J classes are found in the class path, it is possible to enable extensive logging inside the driver. Using Jaybird by importing Jaybird's public interfaces in your Java code , and extending Jaybird by subclassing or implementation of an extension interface but not abstract or concrete class is considered by the authors of Jaybird to be dynamic linking.

Hence our interpretation of the LGPL is that the use of the unmodified Jaybird source does not affect the license of your application code. Jaybird should be viewed as an implementation of that interfaces and LGPL section for dynamic linking is applicable in this case. The distribution package contains the normal sources in jaybird Full source code, including tests and build files, can be obtained from the Subversion repository at SourceForge. The FAQ is included in the distribution, and is available on-line in several places.

The best place to start is the FAQ. Many details for using Jaybird with various programs are located there. Below are some links to useful web sites. Become a developer for Jaybird contact us on Firebird-Java, for Firebird in general, use the Firebird-devel mailing-list. The developers follow the Firebird-Java yahoogroups. Join the list and post information about suspected bugs. List members may be able to help out to determine if it is an actual bug, provide a workaround and get you going again, whereas bug fixes might take awhile.

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When reporting bugs, please provide a minimal, but complete reproduction, including databases and sourcecode to reproduce the problem. Patches to fix bugs are also appreciated. Make sure the patch is against a recent trunk version of the code. Please send corrections, suggestions, or additions to these Release Notes to to the mailing list at Firebird-Java yahoogroups. Best suited for client-server applications with dedicated database server. Port can be omitted default value is , host name must be present.

In general it is advisable to uses database aliases instead of the path the file.

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Deprecated but still available alternative URL:. Type 2 driver, will connect to the database using client library fbclient. Requires correct installation of the client library. Type 2 driver in local mode. Uses client library as in previous case, however will not use socket communication, but rather access database directly. Similar to the Firebird client library, however fbembed. Requires correctly installed and configured Firebird embedded library. Additionally Jaybird 2. Due to multi-threading issues in the Firebird client library as well as in the embedded server version, it is not possible to access a single connection from different threads simultaneously.

When using the client library only one thread is allowed to access a connection at a time. Access to different connections from different threads is however allowed. Client library in local mode and embedded server library on Linux do not allow multithreaded access to the library. Jaybird provides necessary synchronization in Java code, however the mutex is local to the classloader that loaded the Jaybird driver.

EAR file. Precompiled binaries for Windows and Linux platforms are distributed with Jaybird. Please note that Jaybird 2. It is not compatible with the JNI library for Jaybird 2. Dependent libraries libfbclient. The java. Some Firebird distributions will not create libfbclient. There is however one issue related to the algorithm of Firebird Embedded Server installation directory resolution.

Firebird server uses pluggable architecture for internationalization. By default server loads fbintl. The algorithm of directory resolution is the following:. RootDirectory parameter in the firebird. Same happens to the last item of the list. In most cases this is not desired behavior. Therefore, if the application uses character encodings, UDFs or wants to fine-tune server behavior through the configuration file, the FIREBIRD environment variable must be specified and point to the installation directory of the Embedded Server, e. Upto Jaybird 2. That could be either an embedded Firebird library fbembed.

This could lead to problems, For example, if embedded Firebird was used first, the JDBC driver would access the database file directly instead of using the local IPC protocol if only the path to the database was specified. It was not possible to change this without restarting the JVM. Since Jaybird 2. Events is one of the unique features in the Firebird RDBMS and allows asynchronous notification of the applications about named events that happen in the database.

Information on this feature can found in the free IB 6. The interfaces and classes for the event support can be found in org. EventManager interface to register for the synchronous and asynchronous notification about the events in the database;. EventListener interface which has to be implemented by the application that wants to participate in the asynchronous notification;. DatabaseEvent interface which represents the object that will be passed to the EventListener notification method;.

Please note, that each instance of FBEventManager will open a new socket connection to the Firebird server on the port specified by Firebird. Default holdable result sets closed ResultSet in auto-commit mode.


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This connection property allows to create holdable result sets by default. This is needed as a workaround for the applications that do not follow JDBC specification in regard to the auto-commit mode.


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  4. Specifically, such applications open a result set and, while traversing it, execute other statements using the same connection. According to JDBC specification the result set has to be closed if another statement is executed using the same connection in auto-commit mode. DriverManager class and no or empty value should be assigned to it; it has an alias defaultHoldable to simplify the typing;.

    Note, the price for using this feature is that each holdable result set will be fully cached in memory. The memory occupied by it will be released when the statement that produced the result set is either closed or re-executed. Jaybird provides support for updatable result sets. This feature allows a Java application to update the current record using the update XXX methods of java. ResultSet interface. Jaybird provides full support of the Firebird Services API that allows Java applications to perform various server management tasks:. Jaybird provides extensions to some JDBC interfaces.

    All classes belong to org. The table below shows all JDBC extensions present in Jaybird with a driver version in which the extension was introduced. Create new instance of FirebirdConnectionProperties interface that can be used to set connection properties programmatically. Connect to the Firebird database using the specified connection properties. Create new BLOB in the database. Get the TPB parameters for the specified transaction isolation level. Set TPB parameters for the specified transaction isolation level.

    The newly specified mapping is valid for the whole connection lifetime. Extension that allows to get more precise information about outcome of some statement. Check if this statement has open result set. Correctly works only when auto-commit is disabled. Check method documentation for details. Get current result set. Behaviour of this method is similar to the behavior of the Statement.

    Check if this statement is still valid. Statement might be invalidated when connection is automatically recycled between transactions due to some irrecoverable error. Mark this callable statement as a call of the selectable procedure. In former case it retrieves only the first row of the result set. Check if this BLOB is segmented. Seek operation is not defined for the segmented BLOBs. Opens an output stream at the specified position, allows modifying BLOB content.

    Due to server limitations only position 0 is supported. FirebirdSavepoint 4. Savepoint interface introduced in JDBC 3. The table below lists the properties for the connections that are obtained from this data source. Commonly used parameters have the corresponding getter and setter methods, the rest of the Database Parameters Block parameters can be set using setNonStandardProperty setter method.

    This property is not specified in the JDBC standard. Use the the standard defined serverName , portNumber and databaseName instead. Size of the socket buffer. Needed on some Linux machines to fix performance degradation. Number of cache buffers in database pages that will be allocated for the connection. Makes sense for ClassicServer only. Character set for the connection. Similar to encoding property, but accepts Java names instead of Firebird ones.

    Character encoding for the connection. See Firebird documentation for more information. Boolean flag tells driver to assume that standard UDFs are defined in the database. This extends the set of functions available via escaped function calls. This does not affect non-escaped use of functions. Boolean flag tells driver to construct the default result set to be holdable.

    This prevents it from closing in auto-commit mode if another statement is executed over the same connection.


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    Default transaction isolation level. All newly created connections will have this isolation level. One of:. Integer value from java. Connection interface corresponding to the transaction isolation level specified in isolation property. Allows to set any valid connection property that does not have corresponding setter method. Two setters are available:. The connect timeout in seconds. This list is not exhaustive. The following optional features and the methods for their support are not implemented:. Array data type is not yet supported. Blob does not implement following methods:.

    Ref data type is not supported by Firebird server. SQLData data type is not supported by Firebird server. SQLInput is not supported. SQLOutput is not supported. RowId is not supported. NClob is not supported. Struct data type is not supported by server. Jaybird has some implementation-specific issues that should be considered during development. Jaybird behaves differently not only when different result set types are used but also whether the connection is in auto-commit mode or not.

    This leads to the increased time needed to execute statement, however the result set navigation happens almost instantly. When auto-commit mode is switched off, only part of the result set specified by the fetch size is cached on the client. The reason is quite simple — the Firebird API does not provide scrollable cursor support, navigation is possible only in one direction.

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    For other result set types driver will throw an exception. This interface can be used only to obtain information about the IN parameters. Also it is not allowed to call the PreparedStatement. Otherwise the corresponding method of CallableStatement throws an SQLException , because the driver tries to prepare the procedure call with incorrect number of parameters. Jaybird JDBC driver always uses connection encoding when converting array of bytes into character stream.

    When such fields are accessed from a Java application via Jaybird and character set of the connection does not match the character encoding of the field, conversion errors might happen. Therefore it is recommended to convert such fields in the application using the appropriate encoding. It might be important in cases where a distributed transaction - that was at some time in-limbo - was either committed or rolled back by the database administrator.

    The reference implementation of javax. We advise you to either only access columns by their index or use an implementation which correctly uses the column label for column lookup which is either the alias or the original column name if no alias was defined. Set property to true for backwards compatible behavior getColumnName returns the column label ; don't set the property or set it to false for JDBC-compliant behavior recommended.

    J aybird 2. A boolean field can also be set with all numeric setters and the string setter as implied by JDBC 4. For numeric types, currently only 0 will set to false and all other values will set to true. This is something that might change in the future. Only 0 for false and 1 for true are guaranteed, in the future we might decide to throw a conversion exception for other values! For string types we currently set true for "true" , "T" , "Y" and "1" case insensitive, ignoring whitespace , all other values will set false ; this is for compatibility with the current getBoolean behaviour of FBStringField.

    Only "true" and "1" for true and "false" and "0" for false are guaranteed case insensitive, ignoring whitespace , in the future we might decide to throw a conversion exception for other values! Better yet: use the boolean setter instead. The connection pool capability which depends on these classes will be removed in Jaybird 3. This change leaves only the ConnectionPoolDataSource implementations in org. There are no plans to reintroduce a new standalone connection pooling capability. We probably will migrate some of the features like statement pooling to the normal JDBC driver.

    If you require standalone connection pooling, or use an application server which has no built-in connectionpool, please consider using a third-party connection pool like c 3 p0 , DBCP or BoneCP. Connection pooling provides effective way to handle physical database connections. It is believed that establishing new connection to the database takes some noticeable amount or time and in order to speed things up one has to reuse connections as much as possible.

    While this is true for some software and for old versions of Firebird database engine, establishing connection is hardly noticeable with Firebird 1. So why is connection pooling needed? There are few reasons for this. Each good connection pool provides a possibility to limit number of physical connections established with the database server. This is an effective measure to localize connection leaks.

    Any application cannot open more physical connections to the database than allowed by connection pool. Good pools also provide some hints where connection leak occurred. Another big advantage of connection pool is that it becomes a central place where connections are obtained, thus simplifying system configuration.

    However, main advantage of good connection pool comes from the fact that in addition to connection pooling, it can pool also prepared statement. When some statement is used more than one time, it makes sense to use prepared statement. It will be compiled by the server only once, but reused many times. It provides significant speedup when some statement is executed in a loop.

    But what if some prepared statement will be used during lifetime of some object? Should we prepare it in object's constructor and link object lifetime to JDBC connection lifetime or should we prepare statement each time it is needed? All such cases make handling of the prepared statements hard, they pollute application's code with irrelevant details. Connection and statement pooling remove such details from application's code.

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    How would the code in this case look like? Here's the example. Lines show typical code when prepared statement pooling is used. Application obtains JDBC connection from the data source instance of javax. DataSource interface , prepares some SQL statement as if it is used for the first time, sets parameters, and executes the query. Lines and ensure that statement and connection will be released under any circumstances.

    Where do we benefit from the statement pooling? Call to prepare a statement in lines is intercepted by the pool, which checks if there's a free prepared statement for the specified SQL query. If no such statement is found it prepares a new one. In line prepared statement is not closed, but returned to the pool, where it waits for the next call. Same happens to the connection object that is returned to the pool in line Jaybird connection pooling classes belong to org. Base class for all connection pools. Can be used for implementing custom pools, not necessarily for JDBC connections.

    Subclass of AbstractConnectionPool , implements javax. ConnectionPoolDataSource interface. Also provides some basic properties minimum and maximum number of connections, blocking and idle timeout, etc and code to handle JNDI-related issues. Implementation of javax.

    Jaybird specific implementation of javax. ConnectionPoolDataSource and javax. DataSource interface, no connection and statement pooling is available, connections are physically opened in getConnection method and physically closed in their close method. This class defines some additional properties that affect allocated connections. Can be used as JNDI object factory. DataSource interface that uses javax. ConnectionPoolDataSource to allocate physical connections.

    This class is a corner stone of connection and statement pooling in Jaybird. It can be instantiated within the application as well as it can be made accessible to other applications via JNDI. Class implements both java. Serializable and javax. Referenceable interfaces, which allows using it in a wide range of web and application servers. Class implements both javax. ConnectionPoolDataSource and j avax. XADataSource interfaces. Pooled connections returned by this class implement javax. PooledConnection and javax.

    This group contains properties defined in the JDBC specification and should be standard to all connection pools. Maximum time in milliseconds after which idle connection in the pool is closed. Minimum number of open physical connections. If value is greater than 0, corresponding number of connections will be opened when first connection is obtained. Maximum size of prepared statement pool.