本文整理了Java中com.querydsl.core.types.ExpressionUtils.predicate()方法的一些代码示例，展示了ExpressionUtils.predicate()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ExpressionUtils.predicate()方法的具体详情如下：
包路径：com.querydsl.core.types.ExpressionUtils
类名称：ExpressionUtils
方法名：predicate

ExpressionUtils.predicate介绍

[英]Create a new Operation expression
[中]创建新的操作表达式

代码示例

代码示例来源：origin: querydsl/querydsl

@Override
public Predicate not() {
  if (not == null) {
    not = ExpressionUtils.predicate(Ops.NOT, this);
  }
  return not;
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create a {@code left not in right} expression
 *
 * @param <D> type of expressions
 * @param left lhs of expression
 * @param right rhs of expression
 * @return left not in right
 */
public static <D> Predicate notIn(Expression<D> left, CollectionExpression<?,? extends D> right) {
  return predicate(Ops.NOT_IN, left, right);
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create a {@code left is not null} expression
 *
 * @param left operation argument
 * @return left is null
 */
public static Predicate isNotNull(Expression<?> left) {
  return predicate(Ops.IS_NOT_NULL, left);
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create a {@code left == right} expression
 *
 * @param <D> type of expressions
 * @param left lhs of expression
 * @param right rhs of expression
 * @return left == right
 */
public static <D> Predicate eq(Expression<D> left, Expression<? extends D> right) {
  return predicate(Ops.EQ, left, right);
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create a {@code left in right} expression
 *
 * @param <D> type of expressions
 * @param left lhs of expression
 * @param right rhs of expression
 * @return left in right
 */
public static <D> Predicate in(Expression<D> left, CollectionExpression<?,? extends D> right) {
  return predicate(Ops.IN, left, right);
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create a {@code left in right} expression
 *
 * @param <D> type of expressions
 * @param left lhs of expression
 * @param right rhs of expression
 * @return left in right
 */
public static <D> Predicate in(Expression<D> left, SubQueryExpression<? extends D> right) {
  return predicate(Ops.IN, left, right);
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create a {@code left != right} expression
 *
 * @param <D> type of expressions
 * @param left lhs of expression
 * @param right rhs of expression
 * @return left != right
 */
public static <D> Predicate ne(Expression<D> left, Expression<? super D> right) {
  return predicate(Ops.NE, left, right);
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create a {@code left not in right} expression
 *
 * @param <D> type of expressions
 * @param left lhs of expression
 * @param right rhs of expression
 * @return left not in right
 */
public static <D> Predicate notIn(Expression<D> left, SubQueryExpression<? extends D> right) {
  return predicate(Ops.NOT_IN, left, right);
}

代码示例来源：origin: querydsl/querydsl

@Override
public Predicate not() {
  if (not == null) {
    not = ExpressionUtils.predicate(Ops.NOT, this);
  }
  return not;
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create a {@code left is null} expression
 *
 * @param left operation argument
 * @return left is null
 */
public static Predicate isNull(Expression<?> left) {
  return predicate(Ops.IS_NULL, left);
}

代码示例来源：origin: querydsl/querydsl

protected BooleanOperation(Operator op, ImmutableList<Expression<?>> args) {
  super(ExpressionUtils.predicate(op, args));
  opMixin = (PredicateOperation) mixin;
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create a new Operation expression
 *
 * @param operator operator
 * @param args operation arguments
 * @return operation expression
 */
public static PredicateOperation predicate(Operator operator, Expression<?>... args) {
  return predicate(operator, ImmutableList.copyOf(args));
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create a {@code left in right} expression
 *
 * @param <D> element type
 * @param left lhs of expression
 * @param right rhs of expression
 * @return left in right
 */
public static <D> Predicate in(Expression<D> left, Collection<? extends D> right) {
  if (right.size() == 1) {
    return eqConst(left, right.iterator().next());
  } else {
    return predicate(Ops.IN, left, ConstantImpl.create(right));
  }
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create a {@code left not in right} expression
 *
 * @param <D> type of expressions
 * @param left lhs of expression
 * @param right rhs of expression
 * @return left not in right
 */
public static <D> Predicate notIn(Expression<D> left, Collection<? extends D> right) {
  if (right.size() == 1) {
    return neConst(left, right.iterator().next());
  } else {
    return predicate(Ops.NOT_IN, left, ConstantImpl.create(right));
  }
}

代码示例来源：origin: querydsl/querydsl

public Q on(Predicate... conditions) {
  return queryMixin.where(ExpressionUtils.predicate(
      MongodbOps.ELEM_MATCH, collection, ExpressionUtils.allOf(conditions)));
}

代码示例来源：origin: spring-projects/spring-data-mongodb

/**
   * Add the given where conditions.
   *
   * @param conditions must not be {@literal null}.
   * @return the target {@link QueryMixin}.
   * @see QueryMixin#where(Predicate)
   */
  public Q on(Predicate... conditions) {

    return queryMixin
        .where(ExpressionUtils.predicate(MongodbOps.ELEM_MATCH, collection, ExpressionUtils.allOf(conditions)));
  }
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create the intersection of the given arguments
 *
 * @param left lhs of expression
 * @param right rhs of expression
 * @return left and right
 */
public static Predicate and(Predicate left, Predicate right) {
  left = (Predicate) extract(left);
  right = (Predicate) extract(right);
  if (left == null) {
    return right;
  } else if (right == null) {
    return left;
  } else {
    return predicate(Ops.AND, left, right);
  }
}

代码示例来源：origin: querydsl/querydsl

/**
 * Create a {@code left or right} expression
 *
 * @param left lhs of expression
 * @param right rhs of expression
 * @return left or right
 */
public static Predicate or(Predicate left, Predicate right) {
  left = (Predicate) extract(left);
  right = (Predicate) extract(right);
  if (left == null) {
    return right;
  } else if (right == null) {
    return left;
  } else {
    return predicate(Ops.OR, left, right);
  }
}

代码示例来源：origin: querydsl/querydsl

@Override
public Expression<?> visit(Operation<?> expr, C context) {
  ImmutableList<Expression<?>> args = visit(expr.getArgs(), context);
  if (args.equals(expr.getArgs())) {
    return expr;
  } else if (expr instanceof Predicate) {
    return ExpressionUtils.predicate(expr.getOperator(), args);
  } else {
    return ExpressionUtils.operation(expr.getType(), expr.getOperator(), args);
  }
}

代码示例来源：origin: querydsl/querydsl

@SuppressWarnings("unchecked")
@Test
public void not() {
  Path<?> o1 = ExpressionUtils.path(Object.class, "o1");
  Path<?> o2 = ExpressionUtils.path(Object.class, "o2");
  PredicateOperation template = ExpressionUtils.predicate(Ops.EQ, o1, o2);
  assertEquals("!(o1 = o2)", template.not().toString());
}