/**
* Creates a new criteria
*
* @param left path to evaluate in criteria
* @param operator operator
* @param right expected value
* @return a new Criteria
*/
public static Criteria create(String left, String operator, String right) {
Object leftPrepared = left;
Object rightPrepared = right;
Path leftPath = null;
Path rightPath = null;
if (isPath(left)) {
leftPath = PathCompiler.compile(left);
if (!leftPath.isDefinite()) {
throw new InvalidPathException("the predicate path: " + left + " is not definite");
}
leftPrepared = leftPath;
} else if (isString(left)) {
leftPrepared = left.substring(1, left.length() - 1);
}
if (isPath(right)) {
rightPath = PathCompiler.compile(right);
if (!rightPath.isDefinite()) {
throw new InvalidPathException("the predicate path: " + right + " is not definite");
}
rightPrepared = rightPath;
} else if (isString(right)) {
rightPrepared = right.substring(1, right.length() - 1);
}
if (leftPath != null && operator.isEmpty()) {
return Criteria.where(leftPath).exists(true);
} else {
return new Criteria(leftPrepared, CriteriaType.parse(operator), rightPrepared);
}
}
private boolean eval(PredicateContext ctx) {
if (CriteriaType.EXISTS == criteriaType) {
boolean exists = ((Boolean) right);
try {
Configuration c =
Configuration.builder()
.jsonProvider(ctx.configuration().jsonProvider())
.options(Option.REQUIRE_PROPERTIES)
.build();
((Path) left).evaluate(ctx.item(), ctx.root(), c).getValue();
return exists;
} catch (PathNotFoundException e) {
return !exists;
}
} else {
try {
Object leftVal = evaluateIfPath(left, ctx);
Object rightVal = evaluateIfPath(right, ctx);
return criteriaType.eval(rightVal, leftVal, ctx);
} catch (ValueCompareException e) {
return false;
} catch (PathNotFoundException e) {
return false;
}
}
}
private Object evaluateIfPath(Object target, PredicateContext ctx) {
Object res = target;
if (res instanceof Path) {
Path leftPath = (Path) target;
if (ctx instanceof PredicateContextImpl) {
// This will use cache for document ($) queries
PredicateContextImpl ctxi = (PredicateContextImpl) ctx;
res = ctxi.evaluate(leftPath);
} else {
Object doc = leftPath.isRootPath() ? ctx.root() : ctx.item();
res = leftPath.evaluate(doc, ctx.root(), ctx.configuration()).getValue();
}
}
return res;
}
