nz.co.gregs.dbvolution.operators.DBGreaterThanOperator Maven / Gradle / Ivy
/*
* Copyright 2013 Gregory Graham.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package nz.co.gregs.dbvolution.operators;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
import nz.co.gregs.dbvolution.datatypes.QueryableDatatypeSyncer.DBSafeInternalQDTAdaptor;
import nz.co.gregs.dbvolution.databases.definitions.DBDefinition;
import nz.co.gregs.dbvolution.expressions.BooleanExpression;
import nz.co.gregs.dbvolution.expressions.DBExpression;
import nz.co.gregs.dbvolution.expressions.DateExpression;
import nz.co.gregs.dbvolution.expressions.IntegerExpression;
import nz.co.gregs.dbvolution.results.DateResult;
import nz.co.gregs.dbvolution.expressions.NumberExpression;
import nz.co.gregs.dbvolution.results.NumberResult;
import nz.co.gregs.dbvolution.expressions.StringExpression;
import nz.co.gregs.dbvolution.results.IntegerResult;
import nz.co.gregs.dbvolution.results.StringResult;
/**
* Implements GREATERTHAN for all types that support it.
*
* Support DBvolution at
* Patreon
*
* @author Gregory Graham
*/
public class DBGreaterThanOperator extends DBOperator {
private static final long serialVersionUID = 1L;
/**
* Implements GREATERTHAN for all types that support it.
*
* @param greaterThanThis
*/
@SuppressFBWarnings(
value = "NP_LOAD_OF_KNOWN_NULL_VALUE",
justification = "Null is a valid value in databases")
public DBGreaterThanOperator(DBExpression greaterThanThis) {
super(greaterThanThis == null ? greaterThanThis : greaterThanThis.copy());
}
@Override
public DBGreaterThanOperator copyAndAdapt(DBSafeInternalQDTAdaptor typeAdaptor) {
DBGreaterThanOperator op = new DBGreaterThanOperator(typeAdaptor.convert(getFirstValue()));
op.invertOperator = this.invertOperator;
op.includeNulls = this.includeNulls;
return op;
}
@Override
public BooleanExpression generateWhereExpression(DBDefinition db, DBExpression column) {
DBExpression genericExpression = column;
BooleanExpression op = BooleanExpression.trueExpression();
if (genericExpression instanceof StringExpression) {
StringExpression stringExpression = (StringExpression) genericExpression;
op = stringExpression.bracket().isGreaterThan((StringResult) getFirstValue());
} else if (genericExpression instanceof NumberExpression) {
NumberExpression numberExpression = (NumberExpression) genericExpression;
op = numberExpression.isGreaterThan((NumberResult) getFirstValue());
} else if (genericExpression instanceof IntegerExpression) {
IntegerExpression numberExpression = (IntegerExpression) genericExpression;
op = numberExpression.isGreaterThan((IntegerResult) getFirstValue());
} else if (genericExpression instanceof DateExpression) {
DateExpression dateExpression = (DateExpression) genericExpression;
op = dateExpression.isGreaterThan((DateResult) getFirstValue());
}
return this.invertOperator ? op.not() : op;
}
}