io.ebeaninternal.server.expression.platform.BaseDbExpression Maven / Gradle / Ivy
package io.ebeaninternal.server.expression.platform;
import io.ebeaninternal.api.SpiExpressionRequest;
import io.ebeaninternal.server.expression.BitwiseOp;
/**
* Not supported JSON or ARRAY expression handler.
*/
abstract class BaseDbExpression implements DbExpressionHandler {
private final String concatOperator;
BaseDbExpression(String concatOperator) {
this.concatOperator = concatOperator;
}
@Override
public String getConcatOperator() {
return concatOperator;
}
@Override
public void bitwise(SpiExpressionRequest request, String propName, BitwiseOp operator, long flags, String compare, long match) {
String bitOp = bitOp(operator);
request.append("(").append(propName).append(" ").append(bitOp).append(" ? ").append(compare).append(" ?)");
}
private String bitOp(BitwiseOp operator) {
switch (operator) {
case ANY:
case AND:
case ALL:
return "&";
default:
throw new IllegalArgumentException("Unknown Bitwise operator " + operator + " not handled?");
}
}
/**
* Common alternative where the bitwise operation is a function (specifically bitand is used - H2 and Oracle).
*/
protected void bitwiseFunction(SpiExpressionRequest request, String propName, BitwiseOp operator, String compare) {
String funcName = functionName(operator);
request.append(funcName).append("(").append(propName).append(", ?) ").append(compare).append(" ?");
}
protected String functionName(BitwiseOp operator) {
switch (operator) {
case AND:
case ANY:
case ALL:
return "bitand";
default:
throw new IllegalArgumentException("Unknown Bitwise operator " + operator + " not handled?");
}
}
}