studio.raptor.sqlparser.fast.engine.SysProperties Maven / Gradle / Ivy
/*
* Copyright 2004-2014 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package studio.raptor.sqlparser.fast.engine;
import studio.raptor.sqlparser.fast.util.MathUtils;
import studio.raptor.sqlparser.fast.util.Utils;
public class SysProperties {
/**
* System property h2.allowedClasses (default: *).
* Comma separated list of class names or prefixes.
*/
public static final String ALLOWED_CLASSES =
Utils.getProperty("h2.allowedClasses", "*");
/**
* System property h2.check (default: true).
* Assertions in the database engine.
*/
//## CHECK ##
public static final boolean CHECK =
Utils.getProperty("h2.check", true);
/**
* System property h2.collatorCacheSize (default: 32000).
* The cache size for collation keys (in elements). Used when a collator has
* been set for the database.
*/
public static final int COLLATOR_CACHE_SIZE =
Utils.getProperty("h2.collatorCacheSize", 32000);
/**
* System property h2.objectCache (default: true).
* Cache commonly used values (numbers, strings). There is a shared cache
* for all values.
*/
public static final boolean OBJECT_CACHE =
Utils.getProperty("h2.objectCache", true);
/**
* System property h2.objectCacheMaxPerElementSize (default:
* 4096).
* The maximum size (precision) of an object in the cache.
*/
public static final int OBJECT_CACHE_MAX_PER_ELEMENT_SIZE =
Utils.getProperty("h2.objectCacheMaxPerElementSize", 4096);
/**
* System property h2.objectCacheSize (default: 1024).
* The maximum number of objects in the cache.
* This value must be a power of 2.
*/
public static final int OBJECT_CACHE_SIZE =
MathUtils.nextPowerOf2(Utils.getProperty("h2.objectCacheSize", 1024));
/**
* System property h2.oldStyleOuterJoin
* (default: true for version 1.3, false for version 1.4).
* Limited support for the old-style Oracle outer join with "(+)".
*/
public static final boolean OLD_STYLE_OUTER_JOIN =
Utils.getProperty("h2.oldStyleOuterJoin",
Constants.VERSION_MINOR >= 4 ? false : true);
/**
* System property h2.sortBinaryUnsigned
* (default: false with version 1.3, true with version 1.4).
* Whether binary data should be sorted in unsigned mode
* (0xff is larger than 0x00).
*/
public static final boolean SORT_BINARY_UNSIGNED =
Utils.getProperty("h2.sortBinaryUnsigned",
Constants.VERSION_MINOR >= 4 ? true : false);
/**
* System property h2.sortNullsHigh (default: false).
* Invert the default sorting behavior for NULL, such that NULL
* is at the end of a result set in an ascending sort and at
* the beginning of a result set in a descending sort.
*/
public static final boolean SORT_NULLS_HIGH =
Utils.getProperty("h2.sortNullsHigh", false);
/**
* System property h2.traceIO (default: false).
* Trace all I/O operations.
*/
public static final boolean TRACE_IO =
Utils.getProperty("h2.traceIO", false);
/**
* System property h2.javaObjectSerializer
* (default: null).
* The JavaObjectSerializer class name for java objects being stored in
* column of type OTHER. It must be the same on client and server to work
* correctly.
*/
public static final String JAVA_OBJECT_SERIALIZER =
Utils.getProperty("h2.javaObjectSerializer", null);
private SysProperties() {
// utility class
}
}