/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.query.sql.lang;
import org.teiid.designer.runtime.version.spi.TeiidServerVersion.Version;
import org.teiid.metadata.FunctionMethod.Determinism;
import org.teiid.designer.runtime.version.spi.ITeiidServerVersion;
import org.teiid.query.sql.visitor.SQLStringVisitor;
import org.teiid.translator.CacheDirective;
public class CacheHint extends CacheDirective {
private static final long serialVersionUID = -4119606289701982511L;
public static final String PREF_MEM = "pref_mem"; //$NON-NLS-1$
public static final String TTL = "ttl:"; //$NON-NLS-1$
public static final String UPDATABLE = "updatable"; //$NON-NLS-1$
public static final String CACHE = "cache"; //$NON-NLS-1$
public static final String SCOPE = "scope:"; //$NON-NLS-1$
public static final String MIN = "min:"; //$NON-NLS-1$
private Long minRows;
public CacheHint(ITeiidServerVersion teiidVersion) {
super(teiidVersion);
}
public CacheHint(ITeiidServerVersion teiidVersion, Boolean prefersMemory, Long ttl) {
super(teiidVersion, prefersMemory, ttl);
}
public boolean isPrefersMemory() {
if (getPrefersMemory() != null) {
return getPrefersMemory();
}
return false;
}
@Override
public String toString() {
SQLStringVisitor ssv = new SQLStringVisitor(getTeiidVersion());
ssv.addCacheHint(this);
return ssv.getSQLString();
}
public Determinism getDeterminism() {
if (this.getScope() == null) {
return null;
}
switch (getScope()) {
case SESSION:
return Determinism.SESSION_DETERMINISTIC;
case VDB:
return Determinism.VDB_DETERMINISTIC;
}
return Determinism.USER_DETERMINISTIC;
}
public void setScope(String scope) {
if (scope == null) {
setScope((Scope)null);
} else {
setScope(Scope.valueOf(scope.toUpperCase()));
}
}
public boolean isUpdatable(boolean b) {
if (getUpdatable() != null) {
return getUpdatable();
}
return b;
}
public CacheHint clone() {
CacheHint copy = new CacheHint(getTeiidVersion());
copy.setInvalidation(this.getInvalidation());
copy.setPrefersMemory(this.getPrefersMemory());
copy.setReadAll(this.getReadAll());
copy.setScope(this.getScope());
copy.setTtl(this.getTtl());
copy.setUpdatable(this.getUpdatable());
copy.setMinRows(this.getMinRows());
return copy;
}
public void setMinRows(Long minRows) {
this.minRows = minRows;
}
public Long getMinRows() {
return minRows;
}
}